Odpowiedź:
zad 19
a)
k = - 2 1/3 - 25 1/2 = - 2 2/6 - 25 3/6 = - 27 5/6
l = 2 1/3 - 25 1/2 = 2 2/6 - 25 3/6 = - 23 1/6
m = 9,1 : (- 4,3) = - ( 91/10 : 43/10) = - ( 91/10 * 10/43) = - 91/43 = - 2 5/43
n = 2 1/3 + 25 1/2 = 2 2/6 + 25 3/6 = 27 5/6
- 27 5/6 < - 23 1/6 < - 2 5/43 < 27 5/6
k < l < m < n
b)
k = 23,3 * 12,4 = 288,92
l = 12 * (- 23,3) = - 288,92
m = - 2 1/3 + 25 1/2 = - 2 2/6 + 25 3/6 = 23 1/6
n = 23,3 * 12 = 279,6
- 288,92 < 23 1/6 < 279,6 < 288,92
l < m < n < k
c)
k = - 4,3/9,1 = - 43/10 : 91/10 = - 43/10 * 10/91 = - 43/91
l = 4,3/9,1 = 43/91
m = (- 23,3) * 12,4 = - 288,92
n = 9,1 : 4,3 = 91/43 = 2 5/43
- 288,92 < - 43/91 < 43/91 < 2 5/43
m < k < l < n
