-12+17f=18+20f

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Solution for -12+17f=18+20f equation: 



-12+17f=18+20f

We move all terms to the left:

-12+17f-(18+20f)=0

We add all the numbers together, and all the variables

17f-(20f+18)-12=0

We get rid of parentheses

17f-20f-18-12=0

We add all the numbers together, and all the variables

-3f-30=0

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

-3f=30

f=30/-3

f=-10

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