5m-9=-21

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Solution for 5m-9=-21 equation: 



5m-9=-21

We move all terms to the left:

5m-9-(-21)=0

We add all the numbers together, and all the variables

5m+12=0

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

5m=-12

m=-12/5

m=-2+2/5

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