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11x-5=9(x+9)
We move all terms to the left:
11x-5-(9(x+9))=0
We calculate terms in parentheses: -(9(x+9)), so:We get rid of parentheses
9(x+9)
We multiply parentheses
9x+81
Back to the equation:
-(9x+81)
11x-9x-81-5=0
We add all the numbers together, and all the variables
2x-86=0
We move all terms containing x to the left, all other terms to the right
2x=86
x=86/2
x=43
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