16m-21=19-4m

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Solution for 16m-21=19-4m equation: 



16m-21=19-4m

We move all terms to the left:

16m-21-(19-4m)=0

We add all the numbers together, and all the variables

16m-(-4m+19)-21=0

We get rid of parentheses

16m+4m-19-21=0

We add all the numbers together, and all the variables

20m-40=0

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

20m=40

m=40/20

m=2

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