6m+21=123

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Solution for 6m+21=123 equation: 



6m+21=123

We move all terms to the left:

6m+21-(123)=0

We add all the numbers together, and all the variables

6m-102=0

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

6m=102

m=102/6

m=17

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