21+8m=m+2(3m+8)

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Solution for 21+8m=m+2(3m+8) equation: 



21+8m=m+2(3m+8)

We move all terms to the left:

21+8m-(m+2(3m+8))=0



We calculate terms in parentheses: -(m+2(3m+8)), so:

m+2(3m+8)

We multiply parentheses

m+6m+16

We add all the numbers together, and all the variables

7m+16

Back to the equation:

-(7m+16)



We get rid of parentheses

8m-7m-16+21=0

We add all the numbers together, and all the variables

m+5=0

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

m=-5

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