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