7f-8=12

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Solution for 7f-8=12 equation: 



7f-8=12

We move all terms to the left:

7f-8-(12)=0

We add all the numbers together, and all the variables

7f-20=0

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

7f=20

f=20/7

f=2+6/7

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