-13=5(1+4m)=12

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Solution for -13=5(1+4m)=12 equation: 



-13=5(1+4m)=12

We move all terms to the left:

-13-(5(1+4m))=0

We add all the numbers together, and all the variables

-(5(4m+1))-13=0



We calculate terms in parentheses: -(5(4m+1)), so:

5(4m+1)

We multiply parentheses

20m+5

Back to the equation:

-(20m+5)



We get rid of parentheses

-20m-5-13=0

We add all the numbers together, and all the variables

-20m-18=0

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

-20m=18

m=18/-20

m=-9/10

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