-9f+3-7f=20

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Solution for -9f+3-7f=20 equation: 



-9f+3-7f=20

We move all terms to the left:

-9f+3-7f-(20)=0

We add all the numbers together, and all the variables

-16f-17=0

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

-16f=17

f=17/-16

f=-1+1/16

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