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0 = 3x + 12

x - 7 = 6 - (x - 3)

5 - x = 2

1 = x + 1 + 2x

7x - 5 = 9

10 + 3x = 4

4 - 5x = 9

2x - 1 = 1

2

- 1

1

3

- 2

0

- 4

8