2 1per3+1 3per5:1 1per 2

Kelas 5 Matematika
Bab Pecahan

2 1/3 + 1 3/5 : 1 1/2
= 2 1/3 + 1 3/5 : 3/2
= 2 1/3 + 8/5 x 2/3
= 2 1/3 + 16/15
= 2 5/15 + 1 1/15
= 3 6/15
= 3 2/5

21/3 + 13/5 : 11/2
= 7 + (13/5 :11/2) = 7 + (13/5 × 2/11) = 7 + (26/55) = 7  26/55
kalau
2  1/3 + 1  3/5 : 1 1/2
=2  1/3 + (1 3/5 : 1  1/2) = 7/3 + (8/5 : 3/2) = 7/3 + (8/5 × 2/3)
= 7/3 + 16/15 = (7/3 x 5/5) + 16/15 (5/5 = 1, maka 7/3 × 5/5 = 7/3 × 1)
=35/15 + 16/ 15 = 51/15 = 3  6/15