Odpowiedź
I
a) (3/4)/(1/7) = (3/4)*(7/1) = 21/4
b) (7/9)/(7/9) = (7/9)*(9/7) = 1 (skraca się na krzyż- 7 z 7 i 9 z 9)
c) (4/15)/(8/9) = (4/15)*(9/8) = (1/15)*(9/2) = 9/30 = 3/10
II
a) 5(5/6)/2(1/3) = (ułamki niewłaściwe) (35/6)/(7/3) = (35/6)*(3/7) = (5/2)*1 = 5/2 = 2 1/2
b) 2(2/3)/3(1/5) = (8/3)/(16/5)= (8/3)*(5/6) = (4/3)*(5/3) = 20/9 = 2 2/20 = 2 1/10
c) 4(3/8)/(5/8) = (35/8)*(8/5) = 7*1 = 7
III
2(1/4)/(3/8)= (9/4)*(8/3) = 3*2 = 6
Szczegółowe wyjaśnienie:
