3f+2=f+9

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Solution for 3f+2=f+9 equation: 



3f+2=f+9

We move all terms to the left:

3f+2-(f+9)=0

We get rid of parentheses

3f-f-9+2=0

We add all the numbers together, and all the variables

2f-7=0

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

2f=7

f=7/2

f=3+1/2

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