7f-9=47

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Solution for 7f-9=47 equation: 



7f-9=47

We move all terms to the left:

7f-9-(47)=0

We add all the numbers together, and all the variables

7f-56=0

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

7f=56

f=56/7

f=8

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