9=-6m-21

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Solution for 9=-6m-21 equation:



9=-6m-21
We move all terms to the left:
9-(-6m-21)=0
We get rid of parentheses
6m+21+9=0
We add all the numbers together, and all the variables
6m+30=0
We move all terms containing m to the left, all other terms to the right
6m=-30
m=-30/6
m=-5

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