7. 15 9/11 + 2 1/22 - 1 1/2 = ...
Jawab :
15 9/11 + 2 1/22 - 1 1/2 = (15+2-1) 18/22 + 1/22 - 11/22
= 16 8/22
= 16 4/11
8. 20 2/3 + 5 3/5 - 2 2/15 = ...
Jawab:
20 2/3 + 5 3/5 - 2 2/15 = (20 +5-2) 10/15 + 9/15 - 2/15
= 23 17/15
= 24 2/15
9. 24 8/9 - 12 1/6 - 3 1/2 = ...
Jawab:
24 8/9 - 12 1/6 - 3 1/2 = (24-12-3) 16/18 - 3/18 - 9/18
= 9 4/18
= 9 2/9
10. 50 5/6 - 5 5/12 - 4 1/8 = ...
Jawab:
50 5/6 - 5 5/12 - 4 1/8 = (50-5-4) 20/24 - 10/24 - 12/24
= 41 7/24