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27=3s-4(23-s)
We move all terms to the left:
27-(3s-4(23-s))=0
We add all the numbers together, and all the variables
-(3s-4(-1s+23))+27=0
We calculate terms in parentheses: -(3s-4(-1s+23)), so:We get rid of parentheses
3s-4(-1s+23)
We multiply parentheses
3s+4s-92
We add all the numbers together, and all the variables
7s-92
Back to the equation:
-(7s-92)
-7s+92+27=0
We add all the numbers together, and all the variables
-7s+119=0
We move all terms containing s to the left, all other terms to the right
-7s=-119
s=-119/-7
s=+17
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