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-10(s+2)=-7
We move all terms to the left:
-10(s+2)-(-7)=0
We add all the numbers together, and all the variables
-10(s+2)+7=0
We multiply parentheses
-10s-20+7=0
We add all the numbers together, and all the variables
-10s-13=0
We move all terms containing s to the left, all other terms to the right
-10s=13
s=13/-10
s=-1+3/10
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