Odpowiedzi

2009-12-07T21:02:39+01:00
A) 4/5 * 3 1/2 = 4/5 * 7/2 = 14/5 = 2 4/5
b) 3/4 * (1/2 * 5 4/5) = 3/4 * 29/10 = 87/40 = 2 7/40
c)5/7
d)3/2
43 4 43
2009-12-07T21:10:31+01:00
A) 4/5 * 3 1/2 = 4/5 * 7/2= 2/5 * 7/1 = 2 4/5
b) 3/4 * 1/2 * 5 4/5 = 27/40

3/10 * x = 3/14
x= 3/14 : 3/10
x= 3/14 * 10/3
(poskracaj)
x=5/7

x * 5/6= 1 1/4
x= 1 1/4 : 5/6
x= 5/4 * 6/5
x= 2/3
24 3 24