m-7+2m-21+2m-21=180

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Solution for m-7+2m-21+2m-21=180 equation: 



m-7+2m-21+2m-21=180

We move all terms to the left:

m-7+2m-21+2m-21-(180)=0

We add all the numbers together, and all the variables

5m-229=0

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

5m=229

m=229/5

m=45+4/5

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