Question

[(- $\frac{4}{3}$ ) ^7 : (- $\frac{4}{3}$ ) ^5 + (- $\frac{5}{2}$ ) ^5 : (-$\frac{5}{2}$ ) ³ ] ·$\frac{12}{17}$ = ?

Answer 1

28/21 : (-25/10): 75/8 . 12/17
28/21 . -10/25 :75/8 . 12/17
-280/525 .8/75 . 12/17
-2240/39375 . 12/17
26880/669375
5376/133875

Answer 2

[(4/3)^2+(-5/2)^2]* 12/17= [16/9 +25/4]* 12/17=17/3