2(4+5m)-(4m-7)=4m+5m

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Solution for 2(4+5m)-(4m-7)=4m+5m equation: 



2(4+5m)-(4m-7)=4m+5m

We move all terms to the left:

2(4+5m)-(4m-7)-(4m+5m)=0

We add all the numbers together, and all the variables

2(5m+4)-(4m-7)-(+9m)=0

We multiply parentheses

10m-(4m-7)-(+9m)+8=0

We get rid of parentheses

10m-4m-9m+7+8=0

We add all the numbers together, and all the variables

-3m+15=0

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

-3m=-15

m=-15/-3

m=+5

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