7m+4m-5m=78

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Solution for 7m+4m-5m=78 equation: 



7m+4m-5m=78

We move all terms to the left:

7m+4m-5m-(78)=0

We add all the numbers together, and all the variables

6m-78=0

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

6m=78

m=78/6

m=13

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