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15x+102x-20=13(9x+15)
We move all terms to the left:
15x+102x-20-(13(9x+15))=0
We add all the numbers together, and all the variables
117x-(13(9x+15))-20=0
We calculate terms in parentheses: -(13(9x+15)), so:We get rid of parentheses
13(9x+15)
We multiply parentheses
117x+195
Back to the equation:
-(117x+195)
117x-117x-195-20=0
We add all the numbers together, and all the variables
-215!=0
There is no solution for this equation
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