A.3xy³z²:15x²yzⁿ B. 8y²/8:4y³/9 C.5y³z²/2x²z⁴:x³z²/2y²z⁴

A. 3xy^3z^2 : 15x^2yz^n
y^2z^2/5xz^n

b.8y^2/8 = y^2
4y^3/9
y^2 . 9/4y^3 = 9/4y

c. 5y^3z^2/2x^2z^4 = 5y^3/2x^2z^2
x^3z^2/2y^2z^4 = x^3/2y^2z^2
5y^3/2x^2z^2 : x^3/2y^2z^2
= 5y^3/2x^2z^2 . 2y^2z^2/x^3
= 5y^5/x^5