Question

Допоможіть будь ласка!!!!
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Answer 1

$1) \: \: \: \: \: \: \frac{4}{5} \times \frac{15}{16} = \frac{3}{4}$

$3) \: \: \: \: \: \frac{5}{12} \times \frac{6}{25} = \frac{1}{2 \times 5} = \frac{1}{10} = 0.1$

$5) \: \: \: \: \: \frac{4}{15} \times \frac{25}{28} = \frac{5}{3 \times 7} = \frac{5}{21}$

$7) \: \: \: \: \: \frac{9}{14} \times \frac{49}{63} = \frac{49}{14 \times 7} = \frac{49}{98} = 0.5$

$2) \: \: \: \: \: \frac{10}{13} \times \frac{39}{40} = \frac{3}{4}$

$4) \: \: \: \: \: \frac{11}{12} \times \frac{4}{33} = \frac{1}{3 \times 3} = \frac{1}{9}$

$6) \: \: \: \: \: \frac{35}{36} \times \frac{54}{55} = \frac{7 \times 6}{4 \times 11} = \frac{42}{44} = \frac{21}{22}$

$8) \: \: \: \: \: \frac{22}{35} \times \frac{63}{121} = \frac{2 \times 9}{5 \times 11} = \frac{18}{55}$