please please help for my math ill give brainliest

Answer:
X = 4 , Y = 5 , Z = 4
Step-by-step explanation:
[tex]\frac{16a^1+15b}{20ab}[/tex] ← divide each term on the numerator by 20ab
= [tex]\frac{16a^2}{20ab}[/tex] + [tex]\frac{15b}{20ab}[/tex] ← simplify by cancelling common factors
= [tex]\frac{4a}{5b}[/tex] + [tex]\frac{3}{4a}[/tex]
with X = 4 , Y = 5, Z = 4