2+0.4(4m-1)=20

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Solution for 2+0.4(4m-1)=20 equation: 



2+0.4(4m-1)=20

We move all terms to the left:

2+0.4(4m-1)-(20)=0

We add all the numbers together, and all the variables

0.4(4m-1)-18=0

We multiply parentheses

1.6m-0.4-18=0

We add all the numbers together, and all the variables

1.6m-18.4=0

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

1.6m=18.4

m=18.4/1.6

m=11+0.8/1.6

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