13f-12=3f+20+18f

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Solution for 13f-12=3f+20+18f equation: 



13f-12=3f+20+18f

We move all terms to the left:

13f-12-(3f+20+18f)=0

We add all the numbers together, and all the variables

13f-(21f+20)-12=0

We get rid of parentheses

13f-21f-20-12=0

We add all the numbers together, and all the variables

-8f-32=0

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

-8f=32

f=32/-8

f=-4

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