120+15m=45+20m

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Solution for 120+15m=45+20m equation: 



120+15m=45+20m

We move all terms to the left:

120+15m-(45+20m)=0

We add all the numbers together, and all the variables

15m-(20m+45)+120=0

We get rid of parentheses

15m-20m-45+120=0

We add all the numbers together, and all the variables

-5m+75=0

We move all terms containing m to the left, all other terms to the right

-5m=-75

m=-75/-5

m=+15

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