Tolong dijawab dengan cara. Dan tolong disederhanakan

a. 4/9 × 3/4
= (4×3) / (9×4)
= 12 / 36 = 6/18 = 3/9
= 1 / 3

b. 2/7 × 1/6
= (2×1) / ( 7×6)
= 2/ 42
= 1 / 21

c. 1 5/7 ×2/3
= ( 7×1+5) / 7 × 2/3
= 12 /7 × 2 /3
= (12 × 2) / (7 × 3)
= 24 / 21
= 8 / 7
= 1 1/7

d. 3/6 × 2 1/5
= 3/6 × (5×2+1) / 5
= 3/6 × 11/5
= (3×11)/ (6×5)
= 33 / 30
= 11/10
= 1 1/10

e. 2 3/4 × 4
= 2 × 4 × 3/4
= 8 × 3/4
= 2 × 3
= 6

f. 9 × 2/3
= 9/1 × 2 /3
= 18/3
= 6