tolong pakai cara saya baru tahu ada pr pliss jawab pakai cara ya nomor semuanya

2 a. 2/7×5/4 = 5/14
b. 10/9× 3/5 = 2/3
c. 2/25×10/6×9/5 = 6/25
d. 3/2×3/8×4/15 = 3/20

3 a. 1/3×4/5×9/16 = 3/20
b. 8/3×9/4×15/9 = 10

4 a. 1/3+27/25×5/9 = 1/3+3/5 = 14/15
b. 8/3× (3/2+4/5)
= 8/3×(15/10+8/10)
= 8/3×23/10
= 92/15
= 6 ²/15

c. 1/2×4/3+2/9+10/6
= 2/3+2/9+10/6
= 12/18+4/18+30/18
= 46/18
=23/9
= 2 5/9
d. 5/3×2/5-3/5×9/7
= 2/3-27/35
= 70/105-54/105
= 16/105