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-4(3x+7)=64
We move all terms to the left:
-4(3x+7)-(64)=0
We multiply parentheses
-12x-28-64=0
We add all the numbers together, and all the variables
-12x-92=0
We move all terms containing x to the left, all other terms to the right
-12x=92
x=92/-12
x=-7+2/3
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