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8(2+s)=56
We move all terms to the left:
8(2+s)-(56)=0
We add all the numbers together, and all the variables
8(s+2)-56=0
We multiply parentheses
8s+16-56=0
We add all the numbers together, and all the variables
8s-40=0
We move all terms containing s to the left, all other terms to the right
8s=40
s=40/8
s=5
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