3f=15-2f

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Solution for 3f=15-2f equation: 



3f=15-2f

We move all terms to the left:

3f-(15-2f)=0

We add all the numbers together, and all the variables

3f-(-2f+15)=0

We get rid of parentheses

3f+2f-15=0

We add all the numbers together, and all the variables

5f-15=0

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

5f=15

f=15/5

f=3

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