7f-12=f+6

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Solution for 7f-12=f+6 equation: 



7f-12=f+6

We move all terms to the left:

7f-12-(f+6)=0

We get rid of parentheses

7f-f-6-12=0

We add all the numbers together, and all the variables

6f-18=0

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

6f=18

f=18/6

f=3

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