Mohon jawabannya ya?

[tex] = \frac{ {18x}^{8} {y}^{ - 3} }{ {9xy}^{2} } \times ( {y}^{7} )^{2} \\ = 2 {x}^{7} {y}^{ - 5} \times {y}^{14} \\ = {2x}^{7} {y}^{9} [/tex]
Jawaban B