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42=4/5m+18
We move all terms to the left:
42-(4/5m+18)=0
Domain of the equation: 5m+18)!=0We get rid of parentheses
m∈R
-4/5m-18+42=0
We multiply all the terms by the denominator
-18*5m+42*5m-4=0
Wy multiply elements
-90m+210m-4=0
We add all the numbers together, and all the variables
120m-4=0
We move all terms containing m to the left, all other terms to the right
120m=4
m=4/120
m=1/30
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