Pliss dijawab sama caranya

[a^2 / b]^(-3) × [b^(-2) / a^3]^5 : [a^3 / b]^(-2)
= [a^2 / b]^(-3) × [b^(-2) / a^3]^5 × [b / a^3]^(-2)
= a^2×(-3) × b^(-2)×5 × b^(-2) / b^(-3) × a^3×5 × a^3×(-2)
= a^(-6) × b^(-10) × b^(-2) / b^(-3) × a^15 × a^(-6)
= a^(-6) × b^(-10)+(-2) / b^(-3) × a^15+(-6)
= a^(-6) × b^(-12) / a^9 × b^(-3)
= [a^(-6) × a^(-9)] × [b^(-12) × b^3]
= a^(-6)+(-9) × [b^(-12)+3]
= a^(-15) × b^(-9) ------>>> jawabannya : a