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p-20=2(p-57)
We move all terms to the left:
p-20-(2(p-57))=0
We calculate terms in parentheses: -(2(p-57)), so:We get rid of parentheses
2(p-57)
We multiply parentheses
2p-114
Back to the equation:
-(2p-114)
p-2p+114-20=0
We add all the numbers together, and all the variables
-1p+94=0
We move all terms containing p to the left, all other terms to the right
-p=-94
p=-94/-1
p=+94
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