Odpowiedź:
a = 1/5
b = 2
c = 1
d = 1/3
(1/5-1/10)/3 = (1/10)/3= 1/10 * 1/3 = 1/30
(2-1/10)/3 = (20/10-1/10)/3 = 19/10*1/3 = 19/30
(1-1/10)/3=(10/10-1/10)/3= 9/10 * 1/3 = 3 / 10 ( bo 9 / 3 = 3 )
(1/3 - 1/10)/3 = [tex](\frac{1*10}{3*10} - \frac{1*3}{10*3}) / 3 = (\frac{10}{30} - \frac{3}{30})/3= \frac {7}{30} * \frac{1}{3} = \frac {7}{90}[/tex]
Szczegółowe wyjaśnienie: