1. 5/12:15/6x4/3 2.1 1/2x3 1/4 x1/5 3. 8 9/10- 3 1¹/4 -2 ²/5 4. 2 ¹/4 +3¹/2-4¹/3

1. 5/12 × 6/15 × 4/3
= 2/9

2. 3/2 × 13/4 × 1/5
= 39/40

3. 8 18/20 - 3 5/20 - 2 8/20
= 3 5/20 = 3 1/4

4. 2 3/12 + 3 6/12 - 4 4/12
= 5 9/12 - 4 4/12
= 1 5/12

maaf kalau salah