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