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75=(6x-21)
We move all terms to the left:
75-((6x-21))=0
We calculate terms in parentheses: -((6x-21)), so:We get rid of parentheses
(6x-21)
We get rid of parentheses
6x-21
Back to the equation:
-(6x-21)
-6x+21+75=0
We add all the numbers together, and all the variables
-6x+96=0
We move all terms containing x to the left, all other terms to the right
-6x=-96
x=-96/-6
x=+16
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