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The first volume of the sixth grade solves mathematical equations (100, the more the better)
1)3X-( 1/2+ 1/4)= 7/ 12

3X=7/ 12+3/4

3X=4/3

X=4/9

6.6-5x = 3/4-4 times.

6.6-0.75 =-4 times +5X

X=5.85

(3) 1. 1X+2.2 = 5.5-3.3X

1. 1X+3.3X=5.5-2.2

4.4 times =3.3 times

X=3/4=4/3

and .. / with ..

(0.5+x)+x=9.8÷2

2(X+X+0.5)=9.8

25000+x=6x

3200=450+5X+X

X-0.8X=6

12x-8x=4.8

7.5*2X= 15

1.2x=8 1.6

x+5.6=9.4

52-x = 15

9 1÷x = 1.3

X+8.3= 10.7

15x =3

3x-8= 16

7(x-2)=2x+3

3x+9=27 18(x-2)=270

12x=300-4x

7x+5.3=7.4

3x÷5=4.8

30 \x+25 = 85

1.4×8-2x=6

6x- 12.8×3=0.06

4 10-3x= 170

3(x+0.5)=2 1

0.5x+8=43

6x-3x= 18

1.5x+ 18=3x

5×3-x÷2=8

0.273÷x=0.35

1.8x=0.972

x÷0.756=90

9x-40=5

x÷5+9=2 1

48-27+5x=3 1

10.5+x+2 1=56

x+2x+ 18=78

(200-x)÷5=30

(x- 140)÷70=4

0. 1(x+6)=3.3×0.4

4(x-5.6)= 1.6

7(6.5+x)=87.5

(27.5-3.5)÷x=4

x+ 19.8=25.8

5.6 times =33.6 times

9.8-x=3.8

75.6 \x = 12.6

5x+ 12.5=32.3

5(x+8)= 102

x+3x+ 10=70

3(x+3)=50-x+3

5x+ 15=60

3.5-5x=2

0.3×7+4x= 12.5

x÷ 1.5- 1.25=0.75

4x- 1.3×6=2.6

20-9x= 1.2×6.25

6x+ 12.8= 15.8

150×2+3x=690

2x-20=4

3x+6= 18

2(2.8+x)= 10.4

(x-3)÷2=7.5

13.2x+9x=33.3

3x=x+ 100

x+4.8=7.2

6x+ 18=48

3(x+2. 1)= 10.5

12x-9x=8.7

13(x+5)= 169

2x-97=34.2

3.4x-48=26.8

42x+25x= 134

1.5(x+ 1.6)=3.6

2(x-3)=5.8

65x+7=42

9x+4×2.5=9 1

4.2 x+2.5x= 134

10.5x+6.5x=5 1

89x-43x=9.2

5x-45= 100

1.2x-0.5x=6.3

23.4=2x=56

4x-x=48.6

4.5x-x=28

X-5.7=2. 15

15 5X-2X= 18

3X+0.7=5

3.5×2= 4.2+x

26× 1.5= 2x+ 10

0.5× 16― 16×0.2=4x

13 9.25-X=0.403

16.9÷X=0。 three

X÷0.5=2.6

x+ 13=33

3-5 times =80

1.8 +6x=54

6.7 times -60.3=6.7

9 +4x =40

2x+8= 16

x/5= 10

x+7x=8

9x-3x=6

6x-8=4

5x+x=9

x-8=6x

4/5x=20

2x-6= 12

7x+7= 14

6x-6=0

5x+6= 1 1

2x-8= 10

1/2x-8=4

x-5/6=7

3x+7=28

3x-7=26

9x-x= 16

24x+x=50

6/7x-8=4

3x-8=30

6x+6= 12

3x-3= 1

5x-3x=4

2x+ 16= 19

5x+8= 19

14-6x=8

15+6x=27

5-8x=4

7x+8= 15

9-2x= 1

4+5x=9

10-x=8

8x+9= 17

9+6x= 14

x+9x=4+7

2x+9= 17

8-4x=6

6x-7= 12

7x-9=8

x-56= 1

8-7x= 1

x-30= 12

6x-2 1=2 1

6x-3=6

9x= 18

4x- 18= 13

5x+9= 1 1

6-2x= 1 1

x+4+8=23

7x- 12=8

X-5.7=2. 15

15 5X-2X= 18

3X 0.7=5

3.5×2= 4.2 x

26× 1.5= 2x

0.5× 16― 16×0.2=4x

9.25-X=0.403

16.9÷X=0.3

X÷0.5=2.6

3-5 times =80

1.8-6x=54

6.7 times -60.3=6.7

9 +4x=40

0.2x-0.4+0.5=3.7

9.4x-0.4x= 16.2

12-4x=20

1/3x+5/6x= 1.4

12x+34x= 1

18x- 14x= 12

23 x-5× 14= 14

12+34x=56

22- 14x= 12

23x- 14x= 14

x+ 14x=65

23x= 14x+ 14

30x 12x- 14x= 1

x-0.7x=3.6