f+7=2f

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Solution for f+7=2f equation: 



f+7=2f

We move all terms to the left:

f+7-(2f)=0

We add all the numbers together, and all the variables

-1f+7=0

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

-f=-7

f=-7/-1

f=+7

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