3^-5:3^-7-2^-2×2^4+((2/3)^-1)^3

Question

3^-5:3^-7-2^-2×2^4+((2/3)^-1)^3

Answer 1

3 ^ - 5 : 3 ^ - 7 = 3 ^ ( - 5 + 7 ) = 3 ^ 2 = 9 
2 ^ - 2 * 2 ^ 4 = 2 ^ ( - 2 + 4 ) = 2 ^ 2 = 4 
( 2/3 ^ - 1 ) ^ 3 = 3/2 ^ 3 = 1,5 ^ 3 = 3,375 
9 - 4 + 3,375 = 8,375 
Ответ 8,375