2.8+21=2.2m+18

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Solution for 2.8+21=2.2m+18 equation: 



2.8+21=2.2m+18

We move all terms to the left:

2.8+21-(2.2m+18)=0

We add all the numbers together, and all the variables

-(2.2m+18)+23.8=0

We get rid of parentheses

-2.2m-18+23.8=0

We add all the numbers together, and all the variables

-2.2m+5.8=0

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

-2.2m=-5.8

m=-5.8/-2.2

m=2+1/1.5714285714286

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