2.8-1.4(m-8)=21

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Solution for 2.8-1.4(m-8)=21 equation: 



2.8-1.4(m-8)=21

We move all terms to the left:

2.8-1.4(m-8)-(21)=0

We add all the numbers together, and all the variables

-1.4(m-8)-18.2=0

We multiply parentheses

-1.4m+11.2-18.2=0

We add all the numbers together, and all the variables

-1.4m-7=0

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

-1.4m=7

m=7/-1.4

m=-5

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