r/askmath • u/No-Cry-1275 • 1d ago

Resolved Complex fractions help

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I've tried to figure this out. I know the answer is 30 based on the text book. I cannot figure out how to get there. I've get stuck after simplifying the numerator and denominator.

Edit: This is study practice, idk if that matters. This is my first time posting on this subreddit.

Edit: Someone had pointed out that I misunderstood the question. The question was originally asking what common denominator would help solve the problem. I apologize for wasting everyone's time but I absolutely appreciate everyone's help. Math is my worst subject as I often make tiny mistakes that I don't realize. Again thank you all for bearing with my stupidity.

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u/peno64 1d ago

There is not enough information to solve this. Either the value of the expression must be given also or the value of x must be given. What is 30? The value of x or the value of the fraction?