-12=2(3m+4)-5(4+5m)

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Solution for -12=2(3m+4)-5(4+5m) equation: 



-12=2(3m+4)-5(4+5m)

We move all terms to the left:

-12-(2(3m+4)-5(4+5m))=0

We add all the numbers together, and all the variables

-(2(3m+4)-5(5m+4))-12=0



We calculate terms in parentheses: -(2(3m+4)-5(5m+4)), so:

2(3m+4)-5(5m+4)

We multiply parentheses

6m-25m+8-20

We add all the numbers together, and all the variables

-19m-12

Back to the equation:

-(-19m-12)



We get rid of parentheses

19m+12-12=0

We add all the numbers together, and all the variables

19m=0

m=0/19

m=0

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