2(20m+30)=420

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Solution for 2(20m+30)=420 equation: 



2(20m+30)=420

We move all terms to the left:

2(20m+30)-(420)=0

We multiply parentheses

40m+60-420=0

We add all the numbers together, and all the variables

40m-360=0

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

40m=360

m=360/40

m=9

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