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11(x-10)=20(x+30)
We move all terms to the left:
11(x-10)-(20(x+30))=0
We multiply parentheses
11x-(20(x+30))-110=0
We calculate terms in parentheses: -(20(x+30)), so:We get rid of parentheses
20(x+30)
We multiply parentheses
20x+600
Back to the equation:
-(20x+600)
11x-20x-600-110=0
We add all the numbers together, and all the variables
-9x-710=0
We move all terms containing x to the left, all other terms to the right
-9x=710
x=710/-9
x=-78+8/9
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