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(21+15m)11/2=15
We move all terms to the left:
(21+15m)11/2-(15)=0
We add all the numbers together, and all the variables
(15m+21)11/2-15=0
We multiply all the terms by the denominator
(15m+21)11-15*2=0
We add all the numbers together, and all the variables
(15m+21)11-30=0
We multiply parentheses
165m+231-30=0
We add all the numbers together, and all the variables
165m+201=0
We move all terms containing m to the left, all other terms to the right
165m=-201
m=-201/165
m=-1+12/55
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