So first you would evaluate the power making the 4^3=64 then keep the rest of the problem the same.... then add the numbers 64+8 since their the whole numbers and that would equal 72 so now the problem should be 72-9/y. After that you write all the numerators above the common denominator making the final answer to be 72y-9/y
Answer:

Step-by-step explanation:
Subtract the 4 from 9
4x/15 = 60/x
4x^2 = 900
x^2 = 225
x = 15