20+6(4m-99)=90-76+31m

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Solution for 20+6(4m-99)=90-76+31m equation: 



20+6(4m-99)=90-76+31m

We move all terms to the left:

20+6(4m-99)-(90-76+31m)=0

We add all the numbers together, and all the variables

6(4m-99)-(31m+14)+20=0

We multiply parentheses

24m-(31m+14)-594+20=0

We get rid of parentheses

24m-31m-14-594+20=0

We add all the numbers together, and all the variables

-7m-588=0

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

-7m=588

m=588/-7

m=-84

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