12-7+3x=-9+8

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Solution for 12-7+3x=-9+8 equation: 



12-7+3x=-9+8

We move all terms to the left:

12-7+3x-(-9+8)=0

We add all the numbers together, and all the variables

3x+12-7-(-1)=0

We add all the numbers together, and all the variables

3x+6=0

We move all terms containing x to the left, all other terms to the right

3x=-6

x=-6/3

x=-2

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