3m-1.5(0.4+m)=-2.1

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Solution for 3m-1.5(0.4+m)=-2.1 equation: 



3m-1.5(0.4+m)=-2.1

We move all terms to the left:

3m-1.5(0.4+m)-(-2.1)=0

We add all the numbers together, and all the variables

3m-1.5(m+0.4)-(-2.1)=0

We add all the numbers together, and all the variables

3m-1.5(m+0.4)+2.1=0

We multiply parentheses

3m-1.5m-0.6+2.1=0

We add all the numbers together, and all the variables

1.5m+1.5=0

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

1.5m=-1.5

m=-1.5/1.5

m=-1

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