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5x+7(-2x-11)=-140
We move all terms to the left:
5x+7(-2x-11)-(-140)=0
We add all the numbers together, and all the variables
5x+7(-2x-11)+140=0
We multiply parentheses
5x-14x-77+140=0
We add all the numbers together, and all the variables
-9x+63=0
We move all terms containing x to the left, all other terms to the right
-9x=-63
x=-63/-9
x=+7
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