-216=8(1+4m)

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Solution for -216=8(1+4m) equation: 



-216=8(1+4m)

We move all terms to the left:

-216-(8(1+4m))=0

We add all the numbers together, and all the variables

-(8(4m+1))-216=0



We calculate terms in parentheses: -(8(4m+1)), so:

8(4m+1)

We multiply parentheses

32m+8

Back to the equation:

-(32m+8)



We get rid of parentheses

-32m-8-216=0

We add all the numbers together, and all the variables

-32m-224=0

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

-32m=224

m=224/-32

m=-7

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