Cevap:
13. 5+3/7=5tam3/7
10-5tam3/7= 5tam 4/7
14. 6/30+14/30=20/30
20/30-10/30=10/30
15. 28/24-7/24=21/24
21/24+3/24=24/24
16. 9/40-6/40=3/40
3/40+20/40=23/40
Adım adım açıklama:
Yanlış varsa kusuruma bakma
