9m-21=55

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Solution for 9m-21=55 equation: 



9m-21=55

We move all terms to the left:

9m-21-(55)=0

We add all the numbers together, and all the variables

9m-76=0

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

9m=76

m=76/9

m=8+4/9

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