Tolong dijawab dan caranya jga

(1/3 : 2/5)-(4/5-2/3) = (1/3 x 5/2) - (12/15 - 10/15) = 5/6 - 2/15 = 25/30 - 4/30

= 21/30
= 7/10 (D)

D ya jawabannya 7/10