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15x+9=(4x-1)
We move all terms to the left:
15x+9-((4x-1))=0
We calculate terms in parentheses: -((4x-1)), so:We get rid of parentheses
(4x-1)
We get rid of parentheses
4x-1
Back to the equation:
-(4x-1)
15x-4x+1+9=0
We add all the numbers together, and all the variables
11x+10=0
We move all terms containing x to the left, all other terms to the right
11x=-10
x=-10/11
x=-10/11
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