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(10m+30)/(4m-28)=0
Domain of the equation: (4m-28)!=0We multiply all the terms by the denominator
We move all terms containing m to the left, all other terms to the right
4m!=28
m!=28/4
m!=7
m∈R
(10m+30)=0
We get rid of parentheses
10m+30=0
We move all terms containing m to the left, all other terms to the right
10m=-30
m=-30/10
m=-3
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