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13x+9=(1+7x)=2
We move all terms to the left:
13x+9-((1+7x))=0
We add all the numbers together, and all the variables
13x-((7x+1))+9=0
We calculate terms in parentheses: -((7x+1)), so:We get rid of parentheses
(7x+1)
We get rid of parentheses
7x+1
Back to the equation:
-(7x+1)
13x-7x-1+9=0
We add all the numbers together, and all the variables
6x+8=0
We move all terms containing x to the left, all other terms to the right
6x=-8
x=-8/6
x=-1+1/3
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