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-7(s-82)=-63
We move all terms to the left:
-7(s-82)-(-63)=0
We add all the numbers together, and all the variables
-7(s-82)+63=0
We multiply parentheses
-7s+574+63=0
We add all the numbers together, and all the variables
-7s+637=0
We move all terms containing s to the left, all other terms to the right
-7s=-637
s=-637/-7
s=+91
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