A) 4. 3/8 - (3. 5/7 - 1. 5/7) + 1. 5/8= 4. 3/8 - (2/7) + 1. 5/8= 4. 3/8 - 0.2857 + 1. 5/8= 4. 375 - 0.2857 + 0.1875= 4. 2818
B) 12. 7/12 - 4. 5/12 - (20. 3/4 - 19. 3/4)= 12. 7/12 - 4. 5/12 - 0.25= 12. 5833 - 4. 4167 - 0.25= 8. 9166
A) 4. 3/8 - (3. 5/7 - 1. 5/7) + 1. 5/8
= 4. 3/8 - (2/7) + 1. 5/8
= 4. 3/8 - 0.2857 + 1. 5/8
= 4. 375 - 0.2857 + 0.1875
= 4. 2818
B) 12. 7/12 - 4. 5/12 - (20. 3/4 - 19. 3/4)
= 12. 7/12 - 4. 5/12 - 0.25
= 12. 5833 - 4. 4167 - 0.25
= 8. 9166