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7(2x+4)-6x=-12
We move all terms to the left:
7(2x+4)-6x-(-12)=0
We add all the numbers together, and all the variables
-6x+7(2x+4)+12=0
We multiply parentheses
-6x+14x+28+12=0
We add all the numbers together, and all the variables
8x+40=0
We move all terms containing x to the left, all other terms to the right
8x=-40
x=-40/8
x=-5
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