Soal 3. Tentukan hasil dari
a. 2/15 - 1/2 + 3/10
Penyelesaian:
2/15 - 1/2 + 3/10 = 4-15 + 19/30
= - 2/30
= - 1/15
b. 3/7 + 4/21 - 13/14
Penyelesaian:
3/7 + 4/21 - 13/14 = 18+8-39/42
= - 13/42
c. 4 2/5 - 1 1/3 + 2 3/4
Penyelesaian:
4 2/5 - 1 1/3 + 2 3/4 = (4-1+2) 24-20+45/60
= 5 49/60