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-6x-4(-2x-5)=84
We move all terms to the left:
-6x-4(-2x-5)-(84)=0
We multiply parentheses
-6x+8x+20-84=0
We add all the numbers together, and all the variables
2x-64=0
We move all terms containing x to the left, all other terms to the right
2x=64
x=64/2
x=32
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