220+20m=130+30m

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Solution for 220+20m=130+30m equation: 



220+20m=130+30m

We move all terms to the left:

220+20m-(130+30m)=0

We add all the numbers together, and all the variables

20m-(30m+130)+220=0

We get rid of parentheses

20m-30m-130+220=0

We add all the numbers together, and all the variables

-10m+90=0

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

-10m=-90

m=-90/-10

m=+9

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