-7f+4+9f=f+9

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Solution for -7f+4+9f=f+9 equation: 



-7f+4+9f=f+9

We move all terms to the left:

-7f+4+9f-(f+9)=0

We add all the numbers together, and all the variables

2f-(f+9)+4=0

We get rid of parentheses

2f-f-9+4=0

We add all the numbers together, and all the variables

f-5=0

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

f=5

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