Current location - Training Enrollment Network - Mathematics courses - (x? 7)(X? 5)? 2x? 10?

1? 40? a40+a?

2? 50 1aba-b?

3? x 10? 10x?

4? 400ab400-ba?

5? a53? 5a+3?

6x? y? 2x+yy

74543? b? (88b)?

1? 15+a? (1)? ( 15)? Answ

(x? 7)(X? 5)? 2x? 10?

1? 40? a40+a?

2? 50 1aba-b?

3? x 10? 10x?

4? 400ab400-ba?

5? a53? 5a+3?

6x? y? 2x+yy

74543? b? (88b)?

1? 15+a? (1)? ( 15)? Answ

(x? 7)(X? 5)? 2x? 10?

1? 40? a40+a?

2? 50 1aba-b?

3? x 10? 10x?

4? 400ab400-ba?

5? a53? 5a+3?

6x? y? 2x+yy

74543? b? (88b)?

1? 15+a? (1)? ( 15)? Answer? 36? (36)? (1)

2? m? 4? 0.25? (m)? [(4)? (0.25)]

3a? BC? (1)? (3)? (b)? (3)

4? m? Answer? b? (m)? [(a)? (b)]

n? 12 12n y? y? Is it? bab X? 8? y? 8XY

a+bb? (a+b)bab+b? 2? c+6? 2c+6? 7? n-5? n? 2n2? Answer? b2ab

1? Answer? 2.5? b? 1.5? 4a? 2b

4a+2b=4? 2.5+2? 1.5= 13

2? x? 0.5? y? 25Y? XY?

5? 2-0.5? 2=9

3? m? 3? n? 4 1 1m? 1 1n。

1 1? 3+ 1 1? 4=77

1ab? m

1ma-b?

2a? 30? b? 25? m? 60?

6030-25? = 12?

12

2a? b?

1?

Answer? -B?

2a= 12? b=3?

12? -3? = 135

135?

1? Answer? /? 10%? (a? 1- 10%? )

2? 5? /c5c

38 mm? 2? 8+a? cm?

4m? n58? 5m+8n?

5? 1.80.3? t 1.8+0.3t?

1.? x=52x2+3=43

2.? bx? x+b

3.xy 10? x-y? 4.mnm? n

1x? 126.8? 12x-6.8

2? ab? 5 a? b+5?

3? Answer? 3.3b? 4.2 3a+4.2b

4? x0.3? 4.5? 4.5? x-0.3?

5? ab? 6+b?

1m? a 1m

a(a? 1)m(a? m? 1)

2? Answer? 107

( 1)30a? 0.7=2 1a?

30? 2 1a

(2) ?

0? b? 10b? abdominal muscle

b? 10b? 0.7 lbs

5? 7? 12? 5? 5x? 40 18? 6x x? 5? eight

9.2? 3x? 15.2x? 18 & lt; 340.5x? 24.4? x & gt 15.7

1?

2

3? 16=4x-8

4? 9.3- 1.3= 10-2 ?

5? 6x-5 & lt; 23

a=b?

a+3=b+? 3 ? A-? c? =b-c

Answer? d=bd? a 10? =b? 10

1akg3? 3kg?

a-3=3

2? 7.5? x? 30? .

7.5x=30

300kg? 5g? 30g?

three

1? 1? 5g? 1? 30g35g?

2? 1? 30g? 35g65g? 65g? 35g 100g

3? 100g 100g 100g?

1?

x+ 140=290

x+ 140- 140 = 290- 140

x= 150

x? 2.5= 100

x? 2.5? 2.5= 100? 2.5

x=250

x? 87=275

x? 87+87=275+87

x=362

77? x=2 1.9

77? x+x=2 1.9+x

77=2 1.9+x

77-2 1.9 = 2 1.9+x-2 1.9

x=55. 1

77? x= 1 1

77? x? x= 1 1? x

77? 1 1= 1 1? x? 1 1

x=7

6.2x= 124

6.2x? 6.2= 124? 6.2

x=20

39? x=3

39? x? x=3? x

39? 3=3? x? three

x= 13

4.4x=44

4.4x? 4.4=44? 4.4

x= 10

2

1? X-5.6= 16.2

x-5.6+5.6 = 16.2+ 16.2

X = 32.4

X-5.6= 16.2

x-5.6+5.6= 16.2+5.6

x=2 1.8

2? 10x=5

10x? 10=5? five

x= 1

10x=5

1x? 10=5? 10

x=0.5

3? x- 1.5=3.6

:x- 1.5+ 1.5 = 3.6- 1.5

x=2. 1

x- 1.5=3.6

:x- 1.5+ 1.5 = 3.6+ 1.5

X =5. 1

three

1? x? 4? 22

x? 4=22

:x? 4? 4 =22? four

x=5.5

2? x? 6.6? 12.4

x-6.6= 12.4

:x-6.6+6.6= 12.4+6.6

x= 19

3? x4.8=5

x? 4.8=5

x? 4.8? 4.8=5? 4.8

x =24

4?

1? 400? Eight hundred

x

x-400=800

x-400+400=800+400

x= 1200

1200? .

256? 2?

x

2x=56

2x? 2=56? 2

x=28

28? .

1?

2x- 16=5.6

2x- 16+ 16 = 5.6+ 16

2x=2 1.6

X= 10.8

3.2x+ 1.5? 2= 12.6

3.2x+3= 12.6

3.2x+3-3= 12.6-3

3.2x=9.6

3.2x? 3.2=9.6? 3.2

x=3

5? x-2.5? =5.5

5? x-2.55 =5.5? five

x-2.5= 1. 1

x-2.5+2.5= 1. 1+2.5

X=3.6

3.6? 5-x? =7.2

3.6? 5-x3.6 =7.2? 3.6

5 x = 2

5-x+x =2+x

5=2+x

5-2=2+x-2

X=3

x+6.94=2.5

x+6.94? 4=2.5? four

x+6.9= 10

x+6.9-6.9= 10-6.9

x=3. 1

2x-4.66= 1.8

2x-4.66? 6= 1.8? six

2x-4.6 = 10.8

2x-4.6+4.6 = 10.8+4.6

2x = 10.8+4.6

2x= 15.4

2x? 2= 15.4? 2

x=7.7

2? & gt& lt? =

1X=2.5 10X-3? 28? 10X+3=28

2X = 46.2+X & lt; 1 1 ? 54 >; 200? X

3X = 59X+X & gt; 45 9X-X & lt; 45

4X=5? 5X+35 & gt; 5 ? 5x-35 & lt; five

three

1? x? 3.3? 1.2? 4? 1 1.4?

2? x? 3.46 1.5?

3? x? 4 1.67.2.

4?

1200805

x

80+5x=200

80+5x-80=200-80

5x=200

5x? 5=200? five

x=24

24? .

27220 16? 2.4

x

2.4? 20+ 16x=72

48+ 16x=72

48+ 16x-48=72-48

16x=24

16x? 16=24? 16

x= 1.5

1.5? .

5? x=8?

x-3? 1. 1? =5.5

3.5 ? 15-x? =0.5

5x+32.9? =48.7

5x+ 12? 2? =26

x= 12 x=7 x=2

x = 2 x = 1 1 x = 14.3

1? 3x+ 12=842? 40? 9+9x=8 10? 940+x? =8 10

1? x?

2x- 15=73

x=44

44?

2 1x?

2x+30= 1 10

x=40

40.

2x?

2x-20= 1 10

x=65

65.

3? x

1.5x-2=52

x=36

36

4x

x+3x=360

x = 90°

90? 3=270?

27090

x= 1.4 x=3 x=2

x=0.4 x=4 x=8

1? 9x-4x= 180 x=36

2? 8x- 14=58 x=9

3? 0.75x=2.4? 6 x= 19.2

1x

1.5+x6= 13.8

x=3.2

3.2

2? x

3x-5? 2.2=2.5

x=4.5

4.5? .

3x

5? 3+5x=35

x=4

4? .

4x?

2x+2x? =72

x= 12

12? 2=24

12? 24? .

4? x

15x- 12x=240

x=80

80

1? x=6 x=2 x= 1.4

x=0.8 x=4 x=5

1x?

68? 4+4x=560

x=72

72?

2x95?

475-? 50+45? x=95

x=4

495.

3x?

28x+2 1x=392

x=8

8.

4; x?

60 1.5+2? + 1.5x=330

x=80

80.

3x?

36? =0.6?

x+0, 120.6=0.24

x=0.28

0.28.