tolong bantu jawab dong teman teman soal matematika

A) 2/5 x 15/6
   = 30/30
   = 1

B) 1 1/2 x 3/4
   = 3/2 x 3/4
   = 9/8
   = 1 1/8

C) 2/3 x 6/8 x 16/32
   = 2/3 x 3/4 x 1/2
   = 6/24
   = 1/4

D) 1 1/2 x 2 2/3 x 3 3/4
   = 3/2 x 8/3 x 15/4
   = 360/24
   = 15