-15=4(5+3m)-7

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Solution for -15=4(5+3m)-7 equation: 



-15=4(5+3m)-7

We move all terms to the left:

-15-(4(5+3m)-7)=0

We add all the numbers together, and all the variables

-(4(3m+5)-7)-15=0



We calculate terms in parentheses: -(4(3m+5)-7), so:

4(3m+5)-7

We multiply parentheses

12m+20-7

We add all the numbers together, and all the variables

12m+13

Back to the equation:

-(12m+13)



We get rid of parentheses

-12m-13-15=0

We add all the numbers together, and all the variables

-12m-28=0

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

-12m=28

m=28/-12

m=-2+1/3

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