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8x=(x-9)
We move all terms to the left:
8x-((x-9))=0
We calculate terms in parentheses: -((x-9)), so:We get rid of parentheses
(x-9)
We get rid of parentheses
x-9
Back to the equation:
-(x-9)
8x-x+9=0
We add all the numbers together, and all the variables
7x+9=0
We move all terms containing x to the left, all other terms to the right
7x=-9
x=-9/7
x=-1+2/7
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