Odpowiedź:
a) [tex]5*\frac{7+19}{10} = \frac{26}{2} = 13[/tex]
b)[tex]6*\frac{7-3}{3} = 2*(7-3) = 8[/tex]
c) [tex]\frac{14-9}{9+6}*3 = \frac{5}{15}*3 = \frac{15}{15} = 1[/tex]
d) [tex]21*\frac{\frac{1}{2} +7}{7} = 3*(\frac{1}{2}+7) = 1,5+21 = 22,5[/tex]
e) [tex]\frac{8}{9-4}:\frac{16-10}{12} = \frac{8}{5} : \frac{1}{2} = \frac{16}{5} = 3\frac{1}{5}[/tex]
f) [tex](14 * \frac{81-17}{21}) : \frac{8}{3} = (2 * \frac{64}{3}) : \frac{8}{3} = \frac{128}{3} : \frac{8}{3} = \frac{128}{3} * \frac{3}{8} = \frac{128}{8} = 16[/tex]
Szczegółowe wyjaśnienie:
