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Seventh, math is given, praise steps are given, and the answer is added to the second one.
(1) solution: 2( 1-x)-(x+2)=6.

2-2x-x-2 =6

-3x =6

x =-2

(2) Solution: 2 (2x+1)-(x+1) =12.

4x+2-x- 1 = 12

3x= 1 1

x= 1 1/3

The answer is not easy, please adopt it.

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