13m+18=9m+20-18

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Solution for 13m+18=9m+20-18 equation: 



13m+18=9m+20-18

We move all terms to the left:

13m+18-(9m+20-18)=0

We add all the numbers together, and all the variables

13m-(9m+2)+18=0

We get rid of parentheses

13m-9m-2+18=0

We add all the numbers together, and all the variables

4m+16=0

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

4m=-16

m=-16/4

m=-4

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