ada yang tau ga kalo tau tolong jawab ya makasihh

1)
a. 3/8 × 7/9
= 21/72 = 7/24
b. 3/8 × 12 = 36/8
= 4(4/8) = 4(1/4)
c. 7(1/3) × 5(3/5)
= 22/3 × 28/5
= 616/15
= 41(1/15)
d. 1(5/7) × 49/123
= 12/7 × 49/123
= 588/861
= 28/41

2)
a. 2(1/2) × 3(1/3) × 2(2/5)
= 5/2 × 10/3 × 12/5
= 50/6 × 12/5
= 600/30
= 20
b. 3/4 × 1(8/9) × 1(5/7)
= 3/4 × 17/9 × 12/7
= 51/36 × 12/7
= 612/252
= 2(108/252)
= 2(3/7)
c.2(3/5) × 3(3/4) × 3(1/3)
= 13/5 × 15/4 × 10/3
= 195/20 × 10/3
= 1950/60
= 32(30/60)
= 32(1/2)