20+4m=100

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Solution for 20+4m=100 equation: 



20+4m=100

We move all terms to the left:

20+4m-(100)=0

We add all the numbers together, and all the variables

4m-80=0

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

4m=80

m=80/4

m=20

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