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

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Solution for -(-7-x)+3x=12 equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x+1x+7-12=0

We add all the numbers together, and all the variables

4x-5=0

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

4x=5

x=5/4

x=1+1/4

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