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-7(x-2)-3x=84
We move all terms to the left:
-7(x-2)-3x-(84)=0
We add all the numbers together, and all the variables
-3x-7(x-2)-84=0
We multiply parentheses
-3x-7x+14-84=0
We add all the numbers together, and all the variables
-10x-70=0
We move all terms containing x to the left, all other terms to the right
-10x=70
x=70/-10
x=-7
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