21=(-10m)-(3)

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Solution for 21=(-10m)-(3) equation: 



21=(-10m)-(3)

We move all terms to the left:

21-((-10m)-(3))=0



We calculate terms in parentheses: -((-10m)-3), so:

(-10m)-3

We get rid of parentheses

-10m-3

Back to the equation:

-(-10m-3)



We get rid of parentheses

10m+3+21=0

We add all the numbers together, and all the variables

10m+24=0

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

10m=-24

m=-24/10

m=-2+2/5

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