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-4(-4+x)=-12
We move all terms to the left:
-4(-4+x)-(-12)=0
We add all the numbers together, and all the variables
-4(x-4)-(-12)=0
We add all the numbers together, and all the variables
-4(x-4)+12=0
We multiply parentheses
-4x+16+12=0
We add all the numbers together, and all the variables
-4x+28=0
We move all terms containing x to the left, all other terms to the right
-4x=-28
x=-28/-4
x=+7
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