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

f-(-2f+7)=0

We get rid of parentheses

f+2f-7=0

We add all the numbers together, and all the variables

3f-7=0

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

3f=7

f=7/3

f=2+1/3

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