-9=-4.2+(m+7.2)

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Solution for -9=-4.2+(m+7.2) equation: 



-9=-4.2+(m+7.2)

We move all terms to the left:

-9-(-4.2+(m+7.2))=0



We calculate terms in parentheses: -(-4.2+(m+7.2)), so:

-4.2+(m+7.2)

determiningTheFunctionDomain
(m+7.2)-4.2

We get rid of parentheses

m+7.2-4.2

We add all the numbers together, and all the variables

m+3

Back to the equation:

-(m+3)



We get rid of parentheses

-m-3-9=0

We add all the numbers together, and all the variables

-1m-12=0

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

-m=12

m=12/-1

m=-12

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