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90/45=80/m
We move all terms to the left:
90/45-(80/m)=0
Domain of the equation: m)!=0We add all the numbers together, and all the variables
m!=0/1
m!=0
m∈R
-(+80/m)+90/45=0
We add all the numbers together, and all the variables
-(+80/m)+2=0
We get rid of parentheses
-80/m+2=0
We multiply all the terms by the denominator
2*m-80=0
We add all the numbers together, and all the variables
2m-80=0
We move all terms containing m to the left, all other terms to the right
2m=80
m=80/2
m=40
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