Odpowiedź:
A.
a)
3/5 * 1/6 = 1/10
b)
18/15 * (-5/9) = -2/3
c)
7/24 * 2/21 = 1/36
B.
a)
-3/20 * 5/8 * 4/9 = -1/4 * 1/2 * 1/3 = -1/24
b)
5/12 * (-8/9) * 9/10 = 1/3 * (-2) * 1/2 = -1/3
c)
2/21 * (-5/8) * (-7/10) = 1/3 * 1/8 = 1/24
C.
a)
-6 * 3 1/2 = -6 * 7/2 = -21
b)
2 * (-14 2/5) = -2 * 72/5 = -144/5 = 28 4/5
c)
3 3/4 * 2 = 15/4 * 2 = 15/2 = 7 1/2
D.
a)
5/13 * 5 1/5 = 5/13 * 26/5 = 2
b)
3 3/4 * (-2 2/9) = -15/4 * 20/9 = -5 * 5/3 = -25/3 = -8 1/3
c)
-2 1/5 * 4 6/11 = -11/5 * 50/11 = -10
E.
a)
-0,3 * 25/27 = -3/10 * 25/27 = -1/2 * 5/9 = -5/18
b)
23/100 * (-0,2) = -23/100 * 2/10 = -23/500
c)
-0,14 * (-5/7) = 14/100 * 5/7 = 2/20 = 1/10
Szczegółowe wyjaśnienie:
