Solve:
9x^2 over 144 - 4 over 25
I came out with 18/24 - 8/10 but I don't think this is right.
How can you come up with a number if you don't know the value of x?
Why do you write fractions with "over" in the first line and " / " in the second line?
4/25 does not equal 8/10