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-2(3+4s)=-54
We move all terms to the left:
-2(3+4s)-(-54)=0
We add all the numbers together, and all the variables
-2(4s+3)-(-54)=0
We add all the numbers together, and all the variables
-2(4s+3)+54=0
We multiply parentheses
-8s-6+54=0
We add all the numbers together, and all the variables
-8s+48=0
We move all terms containing s to the left, all other terms to the right
-8s=-48
s=-48/-8
s=+6
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