Đáp án:+Giải thích các bước giải:

 $\color{#AAAAAD }{240}$$\color{#BBCBBC }{520}$$\color{#CCCCCC } {122}$$\color{#AAADAC }{008}$$\color{#CCCCAA }{201}$$\color{#BBBBAA }{2}$ 

`(5^4*9^5)/(15^3*27^2)=(5^4*3^10)/(5^3*3^3*3^6)`

`=(5^4*3^10)/(5^3*3^9)=5/3`

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`(10^5*7^3)/(14^2*20^4)=(2^5*5^5*7^3)/(7^2*2^2*2^8*5^4)`

`=(2^5*5^5*7^3)/(7^2*2^10*5^4)=(5*7)/(2^5)=35/32`

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`(8^3*6^5)/(2^12*27^2)=(2^9*2^5*3^5)/(2^12*3^6)`

`=(2^14*3^5)/(2^12*3^6)=(2^2)/3=4/3`