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(9x-1)=(2x+13)
We move all terms to the left:
(9x-1)-((2x+13))=0
We get rid of parentheses
9x-((2x+13))-1=0
We calculate terms in parentheses: -((2x+13)), so:We get rid of parentheses
(2x+13)
We get rid of parentheses
2x+13
Back to the equation:
-(2x+13)
9x-2x-13-1=0
We add all the numbers together, and all the variables
7x-14=0
We move all terms containing x to the left, all other terms to the right
7x=14
x=14/7
x=2
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