-9f=4-7f

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



-9f=4-7f

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-9f+7f-4=0

We add all the numbers together, and all the variables

-2f-4=0

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

-2f=4

f=4/-2

f=-2

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