七年级数学上册解方程专项练习题7

9 8 3

2 —+ 1

3

7x =

8-—x

6

1 —

5 (6x + 2) =— 3 x +2

5

y ——=-1 y -1

2+——

3 6

1 —

3 (3 2

- 3x)

=—(4x-2)

7 9(x+2) -2(x+8) =15 7x -5(17+x) =-3 1.5x +4(x+2) =30 7(5x+4) =10

9 6 6

4 —+ 1

3

7x =

1-—x

3

1 —

9 (5x - 3) =— 3 x +4

5

y ——=-1 y +3

7+——

4 6

1 —

3 (1 2

+ 2x)

=—(2x+1)

7 4(x+5) -8(x-7) =3 7x +9(7+x) =-1 5x -1.5(x-8) =25 5(6x-9) =13


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