Odpowiedź:
poniżej rozwiązania
a)
[tex]6 \frac{4}{3} \div 3 \frac{2}{3} = \frac{22}{3} \div \frac{11}{3} = \frac{22}{3} \times \frac{3}{11} = 2[/tex]
b)
[tex]2 \frac{2}{5} \div \frac{2}{5} = \frac{12}{5} \times \frac{5}{2} = 6[/tex]
c)
[tex] \frac{1}{4} \div \frac{11}{4} + 5 \div \frac{5}{2} = \frac{1}{4} \times \frac{4}{11} + 5 \times \frac{2}{5} = \frac{1}{11} + 2 = 2 \frac{1}{11} [/tex]
d)
[tex] \frac{21}{4} \div \frac{1}{4} - \frac{16}{7} \div \frac{8}{5} = \frac{21}{4} \times 4 - \frac{16}{7} \times \frac{5}{8} = 21 - \frac{10}{7} = 21 - 1 \frac{3}{7} = 19 \frac{4}{7} [/tex]
e)
[tex]5 \times ( \frac{2}{7} \times \frac{14}{5} ) - 2 \frac{1}{3} = 5 \times \frac{4}{5} - 2 \frac{1}{3} = 4 - 2 \frac{1}{3} = 1 \frac{2}{3} [/tex]
f)
[tex]6 \frac{2}{9} \times (5 - \frac{9}{2} \times \frac{1}{9} ) = \frac{56}{9} \times (5 - \frac{1}{2} ) = \frac{56}{9} \times 4 \frac{1}{2} = \frac{56}{9} \times \frac{9}{2} = 28[/tex]
