12f+20=18f-13

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



12f+20=18f-13

We move all terms to the left:

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

We get rid of parentheses

12f-18f+13+20=0

We add all the numbers together, and all the variables

-6f+33=0

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

-6f=-33

f=-33/-6

f=5+1/2

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