nomor 6 sama 8 aja ya maksih pakai cara ya....

Kelas 4 Matematika
Bab Pecahan

6] 2/7 + 2 1/3
= 2/7 + 7/3
= (2 x 3 + 7 x 7)/(7 x 3)
= (6 + 49)/21
= 55/21
= 2 13/21

8] 2 1/4 : 6/10
= 9/4 x 10/6
= 9/6 x 10/4
= 3/2 x 5/2
= 15/4
= 3 3/4

mungkin seperti itu ya