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42=(2x-7)
We move all terms to the left:
42-((2x-7))=0
We calculate terms in parentheses: -((2x-7)), so:We get rid of parentheses
(2x-7)
We get rid of parentheses
2x-7
Back to the equation:
-(2x-7)
-2x+7+42=0
We add all the numbers together, and all the variables
-2x+49=0
We move all terms containing x to the left, all other terms to the right
-2x=-49
x=-49/-2
x=24+1/2
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