Odpowiedź :
5/2 ×16/3 = 80/6 = 13 2/6
b) 15/4 × 21/5 = 315/20 = 63/4 = 15 3/4
b) 15/4 × 21/5 = 315/20 = 63/4 = 15 3/4
5/2*16/3=80/48=40/24=20/12=5/4=1¼
3¾ × 4⅕= 15/4*21/5=315/20=15¾
3¾ × 4⅕= 15/4*21/5=315/20=15¾