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1) 66x+ 17y=3967

25x+y= 1200

Answer: x=48 y=47.

(2) 18x+23y=2303

74x-y= 1998

Answer: x=27 y=79

(3) 44x+90y=7796

44x+y=3476

Answer: x=79 y=48

⑷76x-66y = 4082

30x-y=2940

Answer: x=98 y=5 1.

(5) 67x+54y=8546

7 1x-y=5680

Answer: x=80 y=59

(6) 42x-95y=- 14 10

2 1x-y= 1575

Answer: x=75 y=48

(7) 47x-40y=853

34x-y=2006

Answer: x=59 y=48

(8) 19x-32y=- 1786

75x+y=4950

Answer: x=66 y=95

(9) 97x+24y=7202

58x-y=2900

Answer: x=50 y=98

( 10) 42x+85y=6362

63x-y= 1638

Answer: x=26 y=62

( 1 1)85x-92y =-25 18

27x-y=486

Answer: x= 18 y=44.

( 12) 79x+40y=24 19

56x-y= 1 176

Answer: x=2 1 y= 19.

( 13) 80x-87y=2 156

22x-y=880

Answer: x=40 y= 12.

( 14) 32x+62y=5 134

57x+y=2850

Answer: x=50 y=57

( 15) 83x-49y=82

59x+y=2 183

Answer: x=37 y=6 1.

( 16) 9 1x+70y=5845

95x-y=4275

Answer: x=45 y=25.

( 17) 29x+44y=528 1

88x-y=3608

Answer: x=4 1 y=93.

( 18) 25x-95y=-4355

40x-y=2000

Answer: x=50 y=59

( 19) 54x+68y=3284

78x+y= 1404

Answer: x= 18 y=34.

(20) 70x+ 13y=3520

52x+y=2 132

Answer: x=4 1 y=50.

(2 1) 48x-54y=-3 186

24x+y= 1080

Answer: x=45 y=99

(22) 36x+77y=76 19

47x-y=799

Answer: x= 17 y=9 1.

(23) 13x-42y=-27 17

3 1x-y= 1333

Answer: x=43 y=78

(24) 28x+28y=3332

52x-y=4628

Answer: x=89 y=30

(25) 62x-98y=-2564

46x-y=2024

Answer: x=44 y=54.

(26) 79x-76y=-4388

26x-y=832

Answer: x=32 y=9 1.

(27) 63x-40y=-82 1

42x-y=546

Answer: x= 13 y=4 1.

(28) 69x-96y=- 1209

42x+y=3822

Answer: x=9 1 y=78.

(29) 85x+67y=7338

1 1x+y=308

Answer: x=28 y=74

(30) 78x+74y= 12928

14x+y= 12 18

Answer: x=87 y=83.

(3 1) 39x+42y=533 1

59x-y=584 1

Answer: x=99 y=35

(32)29x+ 18y = 19 16

58x+y=2320

Answer: x=40 y=42

(33) 40x+3 1y=6043

45x-y=3555

Answer: x=79 y=93

(34) 47x+50y=8598

45x+y=3780

Answer: x=84 y=93

(35) 45x-30y=- 1455

29x-y=725

Answer: x=25 y=86

(36) 1 1x-43y =- 136 1

47x+y=799

Answer: x= 17 y=36.

(37) 33x+59y=3254

94x+y= 1034

Answer: x= 1 1 y=49.

(38) 89x-74y=-2735

68x+y= 1020

Answer: x= 15 y=55.

(39) 94x+7 1y=75 17

78x+y=3822

Answer: x=49 y=4 1.

(40) 28x-62y=-4934

46x+y=552

Answer: x= 12 y=85.

(4 1) 75x+43y=8472

17x-y= 1394

Answer: x=82 y=54.

4 1x-38y =- 1 180

29x+y= 1450

Answer: x=50 y=85

(43) 22x-59y=824

63x+y=4725

Answer: x=75 y= 14.

(44) 95x-56y=-40 1

90x+y= 1530

Answer: x= 17 y=36.

(45) 93x-52y=-852

29x+y=464

Answer: x= 16 y=45.

(46) 93x+ 12y=8823

54x+y=49 14

Answer: x=9 1 y=30.

(47) 2 1x-63y=84

20x+y= 1880

Answer: x=94 y=30

(48) 48x+93y=9756

38x-y=950

Answer: x=25 y=92

(49) 99x-67y=40 1 1

75x-y=5475

Answer: x=73 y=48

(50) 83x+64y=929 1

90x-y=3690

Answer: x=4 1 y=92.

3X+ 18=52 x=34/3

4Y+ 1 1 = 22y = 1 1/4

3X 9 = 5 x = 5/27

8Z/6=48 z=36

3X+7=59 x=52/3

4Y-69=8 1 y=75/4

8X*6=5 x=5/48

7Z/9=4 y=63/7

15X+8-5X=54 x=4.6

5Y*5=27 y=27/40

8x+2= 10 x= 1

x*8=88 x= 1 1

y-90= 1 y=9 1

2x-98=2 x=50

6x*6= 12 x= 1/3

5-6=5x x=- 1/5

6*x=42 x=7

55-y=33 y=22

1 1 * 3x = 60x = 20/ 1 1

8-y=2 y=-6

1.x+2=3

2.x+32=33

3.x+6= 18

4.4+x=47

5. 19-x=8

6.98-x= 13

7.66-x= 10

8.5x= 10

9.3 times =27

10.7x=7

1 1.8x=8

12.9x=9

13. 10x= 100

14.66x=660

15.7x=49

16.2x=4

17.3x=9

18.4x= 16

19.5x=25

20.6 times =36

2 1.8x=64

22.9x=8 1

23. 10x= 100

24. 1 1x = 12 1

25. 12x= 144

26. 13x= 169

27. 14x= 196

28. 15x=225

29. 16x=256

30. 17x=289

3 1. 18x=324

32. 19x=36 1

33.20x=400

3 1.2 1x=44 1

32.22x=484

33. 1 1 1x = 1232 1

34. 1 1 1 1x = 123432 1

35. 1 1 1 1 1x = 12345432 1

36. 1 1 1 1 1 1x = 1234565432 1

37.46/x=23

38.64/x=8

39.99/x= 1 1

40. 1235467564x=0

4 1.2x+ 1= -2+x

42.4x-3(20 times) =3

43..-2(x- 1)=4

44.3X+ 189=52 1

45.4Y+ 1 19=22 5

46.3X+77=59

47.4Y-6985=8 1

48.X=0. 1

49.5X=55.5 1)87x+2y=7733

20x+32y=4364

Answer: x=87 y=82.

2)44x+60y=6340

15x+42y=4 122

Answer: x=20 y=9 1.

3) 1 1x+74y=3548

7 1x+45y=4730

Answer: x=40 y=42

4)53x+54y=3229

70x+43y=2877

Answer: x= 1 1 y=49.

5)43x+9y=80 1

76x+ 16y= 1420

Answer: x=9 y=46

6)55x+32y=6 16 1

45x+84y= 10707

Answer: x=55 y=98

7)47x+27y=5396

94x+55y= 10870

Answer: x=70 y=78

8)33x+49y=4237

92x+2y=6428

Answer: x=69 y=40

9)0x+56y=3920

64x+90y=9244

Answer: x=46 y=70

10)9 1x+8y=4696

5 1x+66y=5 154

Answer: x=48 y=4 1 1 A beverage factory has developed two new drinks, A and B, both of which are raw materials. Each bottle of beverage A contains 20g of A and 20g of B, and each bottle of beverage B contains 30g of A and 20g of B. At present, the raw materials of A and B are 2800g each. The fourth level plans to produce AB*** 100 bottles to produce X bottles of beverage A. ..

(1) How many production schemes are there? Write the solution process.

(2) If the cost per bottle of a beverage is 260 yuan's last article and the next article, copy this page and link it to a friend's product forum. Nokia must have an answer to solve 80 math problems in the first day of the equation! The cost of each bottle of beverage B is 280 yuan, and the total cost of these two beverages is Y yuan. Please write the relationship between y and x and explain what value x takes to minimize the cost. The first math application problem 30 [mark the first math application problem] 1. It is known that the moving point A starts from the origin O to a 1, and the speed of A is V, then the speed of B is 4v for 3 seconds, and the distance between them is.

It is planned to transport 1240 tons of Class A goods and 880 tons of Class B goods to a certain place by freight train. It is known that there are 40 freight cars of two different specifications, A and B, hanging on this freight train for next semester. When commenting on the tags of documents to be classified (1), please abide by the law, pay attention to language civilization and give more support to document sharers. Submit comments on the first volume of the first day of junior high school Ctrl+ math problems. The use of A-type train cars is 6000 yuan per section, and the use of B-type freight cars is 8000 yuan per section.

(1) Assuming that the total cost of transporting this batch of goods is Y10,000 yuan, this truck is linked to the X section of the A-type vehicle. Try to write the relationship between y and X.

(2) If each A-type vehicle can armor up to 35 tons of Class A goods and 15 tons of Class B goods, and each B-type vehicle can armor up to 25 tons of Class A goods and 35 tons of Class B goods, and the number of sections of Class A vehicles and Class B vehicles is arranged according to this requirement, then * * * How many schemes are there to arrange vehicles? Math calculation problems in the first grade of junior high school

(3) Among the above schemes, which scheme has the least freight? What's the lowest freight?

3 Class A and Class B of the ninth grade in Guangming Middle School donated the same amount in the "Hope Project" donation activity, a pile of toys, each with three copies, leaving 59 copies; Each person is divided into five, and the last child is less than four. * * * How many toys are there? The child has a pile of toys, each toy is divided into three parts, and the remaining 59 parts; Everyone is above 300 yuan and below 400 yuan. It is known that one person in Class A donated to 6 yuan, the rest to 9 yuan, and one person in Class B donated 13 yuan. First, summarize the application of mathematical inequality-find a tutor, be a tutor-Yibin tutor. First, summarize the application of mathematical inequality: Example 65,438+0. Two stores in Class A and Class B sell the same goods at the same price, and the rest are donated to 8 yuan by the total number of students in Class A and Class B. Summary of Application Problems of Mathematical Inequality 1 A and B sell the same goods at the same price, and each store provides different preferential schemes: after buying the goods at 100 yuan in Store A, the goods purchased again are calculated according to the original price of Book 1.

An agricultural machinery service team has 15 technicians and assistants, and the number of technicians is twice that of assistants. The service team plans to give employees a bonus of 20,000 yuan, which will be paid according to the two standards of "technician's personal bonus" and "assistant's personal bonus", in which A ≥ B ≥ 80.

Ask for the number of technicians and auxiliary personnel of agricultural machinery service team.

Only so much, please adopt!