20m+260=30m+140

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Solution for 20m+260=30m+140 equation: 



20m+260=30m+140

We move all terms to the left:

20m+260-(30m+140)=0

We get rid of parentheses

20m-30m-140+260=0

We add all the numbers together, and all the variables

-10m+120=0

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

-10m=-120

m=-120/-10

m=+12

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