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7(x-5)-3=-87
We move all terms to the left:
7(x-5)-3-(-87)=0
We add all the numbers together, and all the variables
7(x-5)+84=0
We multiply parentheses
7x-35+84=0
We add all the numbers together, and all the variables
7x+49=0
We move all terms containing x to the left, all other terms to the right
7x=-49
x=-49/7
x=-7
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