tolong bantu saya aku mohon

a. 2/5 × 15/6 = 30/30 = 1

b. 1 1/2 × 3/4 = 3/2 × 3/4 = 9/8 = 1 1/8

c. 2/3 ×6/8 × 16/32 = 2/3 × 3/4 × 1/2 = 6/24 = 1/4

d. 1 1/2 × 2 2/3 × 3 3/4 = 3/2 × 8/3 × 15/4 = 360/24 = 15

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