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

50m-150=0

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

50m=150

m=150/50

m=3

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