2m-21=19

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Solution for 2m-21=19 equation: 



2m-21=19

We move all terms to the left:

2m-21-(19)=0

We add all the numbers together, and all the variables

2m-40=0

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

2m=40

m=40/2

m=20

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