-7-9f=-3f-1

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Solution for -7-9f=-3f-1 equation: 



-7-9f=-3f-1

We move all terms to the left:

-7-9f-(-3f-1)=0

We get rid of parentheses

-9f+3f+1-7=0

We add all the numbers together, and all the variables

-6f-6=0

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

-6f=6

f=6/-6

f=-1

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