30m+140=20m+260

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



30m+140=20m+260

We move all terms to the left:

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

We get rid of parentheses

30m-20m-260+140=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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