7-2f=-7

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Solution for 7-2f=-7 equation: 



7-2f=-7

We move all terms to the left:

7-2f-(-7)=0

We add all the numbers together, and all the variables

-2f+14=0

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

-2f=-14

f=-14/-2

f=+7

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