Cześć ;-)
Obliczenia
[tex]a] \ \frac{2}{3} \ liczby \ 12 \ to \ \frac{2}{3}\cdot12=2\cdot4=\boxed8\\\\b] \ \frac{4}{7} \ liczby \ 21 \ to \ \frac{4}{7}\cdot21=4\cdot3=\boxed{12}\\\\c] \ \frac{3}{5} \ z \ 60 \ min \ to \ \frac{3}{5}\cdot60 \ min=3\cdot12 \ min=\boxed{36 \ min}\\\\d] \ \frac{3}{5} \ z \ 45 \ min \ to \ \frac{3}{5}\cdot45 \ min=3\cdot9 \ min=\boxed{27 \ min}[/tex]
Pozdrawiam!
Odpowiedź:
1.2
1.
a) 2/3 liczby 12 to 2/3 * 12 = 2 * 4 = 8
b) 4/7 liczby 21 to 4/7 * 21 = 4 * 3 = 12
c) 3/5 z 60 min to 3/5 * 60 min = 3 * 12 min = 36 min
d) 3/5 z 45 min to 3/5 * 45 min = 3 * 9 min = 27 min
