3f+9-2f+4=12

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Solution for 3f+9-2f+4=12 equation: 



3f+9-2f+4=12

We move all terms to the left:

3f+9-2f+4-(12)=0

We add all the numbers together, and all the variables

f+1=0

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

f=-1

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