Tolong bantu jawab ya :) Makasih

3.
9a³b : -3a² = (9:(-3))x(a³b : a²) = -3 a³⁻²b = -3ab

4.
30x⁵y⁵ : (5x²y³ x 2x²y²) = 30x⁵y⁵ : 10x⁴y⁵ = 3x⁵⁻⁴y⁵⁻⁵ = 3x

5.
48k⁶l⁷ : (8k⁴l³ x 2k²l³) = 48k⁶l⁷ : 16k⁶l⁶ = 3k⁶⁻⁶l⁷⁻⁶ = 3l