10(m-9)=-20

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Solution for 10(m-9)=-20 equation: 



10(m-9)=-20

We move all terms to the left:

10(m-9)-(-20)=0

We add all the numbers together, and all the variables

10(m-9)+20=0

We multiply parentheses

10m-90+20=0

We add all the numbers together, and all the variables

10m-70=0

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

10m=70

m=70/10

m=7

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