40-7m=-8(m-4)

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Solution for 40-7m=-8(m-4) equation: 



40-7m=-8(m-4)

We move all terms to the left:

40-7m-(-8(m-4))=0



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

-8(m-4)

We multiply parentheses

-8m+32

Back to the equation:

-(-8m+32)



We get rid of parentheses

-7m+8m-32+40=0

We add all the numbers together, and all the variables

m+8=0

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

m=-8

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