7+78/f=9

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Solution for 7+78/f=9 equation: 



7+78/f=9

We move all terms to the left:

7+78/f-(9)=0



Domain of the equation: f!=0

f∈R



We add all the numbers together, and all the variables

78/f-2=0

We multiply all the terms by the denominator


-2*f+78=0

We add all the numbers together, and all the variables

-2f+78=0

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

-2f=-78

f=-78/-2

f=+39

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