7f+2=30

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Solution for 7f+2=30 equation: 



7f+2=30

We move all terms to the left:

7f+2-(30)=0

We add all the numbers together, and all the variables

7f-28=0

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

7f=28

f=28/7

f=4

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