12-2f=-4f

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Solution for 12-2f=-4f equation: 



12-2f=-4f

We move all terms to the left:

12-2f-(-4f)=0

We get rid of parentheses

-2f+4f+12=0

We add all the numbers together, and all the variables

2f+12=0

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

2f=-12

f=-12/2

f=-6

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