-3f-2f=21

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Solution for -3f-2f=21 equation: 



-3f-2f=21

We move all terms to the left:

-3f-2f-(21)=0

We add all the numbers together, and all the variables

-5f-21=0

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

-5f=21

f=21/-5

f=-4+1/5

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