Uzupełnij i oblicz: a) 2/5 liczby 50 b) 3/4 liczby 28 c) 5/9 liczby 36 d) 1, 1/7 liczby 21

2/5 * 50 = 2/5 * 50/1 = 100/5 = 20
3/4 * 28 = 3/4 * 28/1 = 84/4 = 21
5/9 * 36 = 5/9 * 36/1 = 180/9 = 20
1 1/7 * 21 = 8/7 * 21/1 = 168/7 = 24
Cześć.
a) [tex]\frac{2}{5} * 50 = \frac{100}{5} =20[/tex]
b) [tex]\frac{3}{4} * 28 = \frac{3}{1} *7 = 21[/tex]
c) [tex]\frac{5}{9} *36 = \frac{5}{1} * 4 = 20[/tex]
d) [tex]\frac{8}{7} * 21 = \frac{8}{1} * 3 = 24[/tex]
Pozdrawiam :)