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-6(3+s)=-42
We move all terms to the left:
-6(3+s)-(-42)=0
We add all the numbers together, and all the variables
-6(s+3)-(-42)=0
We add all the numbers together, and all the variables
-6(s+3)+42=0
We multiply parentheses
-6s-18+42=0
We add all the numbers together, and all the variables
-6s+24=0
We move all terms containing s to the left, all other terms to the right
-6s=-24
s=-24/-6
s=+4
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