3f=-12.

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Solution for 3f=-12. equation: 



3f=-12.

We move all terms to the left:

3f-(-12.)=0

We add all the numbers together, and all the variables

3f-(-12)=0

We add all the numbers together, and all the variables

3f+12=0

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

3f=-12

f=-12/3

f=-4

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