20m+270=30m+420

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Solution for 20m+270=30m+420 equation: 



20m+270=30m+420

We move all terms to the left:

20m+270-(30m+420)=0

We get rid of parentheses

20m-30m-420+270=0

We add all the numbers together, and all the variables

-10m-150=0

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

-10m=150

m=150/-10

m=-15

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