3f+14=9f-28

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Solution for 3f+14=9f-28 equation: 



3f+14=9f-28

We move all terms to the left:

3f+14-(9f-28)=0

We get rid of parentheses

3f-9f+28+14=0

We add all the numbers together, and all the variables

-6f+42=0

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

-6f=-42

f=-42/-6

f=+7

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