15m+21=100

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Solution for 15m+21=100 equation: 



15m+21=100

We move all terms to the left:

15m+21-(100)=0

We add all the numbers together, and all the variables

15m-79=0

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

15m=79

m=79/15

m=5+4/15

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