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3x-2(-1-2x)=-12
We move all terms to the left:
3x-2(-1-2x)-(-12)=0
We add all the numbers together, and all the variables
3x-2(-2x-1)-(-12)=0
We add all the numbers together, and all the variables
3x-2(-2x-1)+12=0
We multiply parentheses
3x+4x+2+12=0
We add all the numbers together, and all the variables
7x+14=0
We move all terms containing x to the left, all other terms to the right
7x=-14
x=-14/7
x=-2
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