Adriana plants a rectangular vegetable garden in her backyard. The length of the garden is 16g + 24 and the width of the garden is 13g - 15. How much longer is the length of the garden than the width

When you have a negative power of a fraction, you can solve this way:

(5/6)^-4 = 5^-4/6^-4 = 6^4/5^4 = (6/5)^4

Another way to change a negative power of a fraction is to write the reciprocal of the fraction and change the power to positive.

(5/6)^-4=(6/5)^4