(8-m)7+20=15m

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Solution for (8-m)7+20=15m equation: 



(8-m)7+20=15m

We move all terms to the left:

(8-m)7+20-(15m)=0

We add all the numbers together, and all the variables

(-1m+8)7-15m+20=0

We add all the numbers together, and all the variables

-15m+(-1m+8)7+20=0

We multiply parentheses

-15m-7m+56+20=0

We add all the numbers together, and all the variables

-22m+76=0

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

-22m=-76

m=-76/-22

m=3+5/11

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