Odpowiedź:
1.
a) 3 x [tex]\frac{1}{7\\}\\[/tex] = [tex]\frac{3}{7}[/tex]
b) 15 x [tex]\frac{2}{5}[/tex] (skracamy 15 z 5) = 6
c) 21 x [tex]\frac{1}{6\\}[/tex] = [tex]\frac{7}{2}[/tex] = 3,5
d) 1/7 x 7 = 1
e) 5/6 x 9 = 15/2 = 7,5
f) 1/12 x 24 = 2
g) 5 x 1 1/3 = 20/3 = 6 2/3
h) 25/8 x 4 = 12,5
2.
a)
3/4 x 1/5 = 3/20
6/8 x 1/4 = 3/16
5/8 x 4/3 = 1 1/6
4/12 x 7/2 = 14/12 = 1 1/6
b)
13/5 x 10/7 = 26/7 = 3 5/7
7/4 x 8/3 = 14/3 = 4 2/3
11/6 x 18/7 = 33/7 = 4 5/7
5/2 x 26/8 = 65/8 = 8 1/8
;D
