Pomocy Zad 1 3/4 : 0,75= 4,2 :21/5 = 17/2 : 8,5= Rozwińcie to!

3/4 : 0,75 = 3/4 : 75/100 = 3/4 : 3/4 = 3/4 * 4/3 = 1 4,2 : 21/5 = 42/10 : 21/5 = 42/10 * 5/21 = 2/2 * 1/1 = 1 17/2 : 8,5 = 17/2 :85/10 = 17/2 * 10/85 = 1/1 * 5/5 = 1 * 1 = 1 ( na ułamkach zwykłych)

3/4:0,75 =3/4 :3/4=3/4·4/3=1  lub 0,75:0,75=1 4,2:21/5 =4 1/5 :21/5 =21/5·5/21=1  lub 4,2:4,2=1 17/2:8,5 =17/2 :8 1/2 =17/2 :17/2 =17/2·2/17=1  lub 8,5:8,5=1