Question

МНОГОЭТАЖНЫЕ ДРОБИ! 50 БАЛЛОВ!
1) 1/3 * 1/4 * 1/2
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5/6 * 2/3 * 1/12

2) 3/5 - 1/3 - 2/9
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7/15 + 2/3 - 4/5

Answer 1

$frac{ frac{1}{3}* frac{1}{4}* frac{1}{2}}{ frac{5}{6}* frac{2}{3}* frac{1}{12}}= frac{ frac{1}{24} }{ frac{10}{216}}= frac{1}{24}* frac{216}{10}= frac{9}{10}=0,9$

$frac{frac{3}{5}-frac{1}{3}-frac{2}{9}}{frac{7}{15}+frac{2}{3}-frac{4}{5}}} = frac{ frac{27}{45}-frac{15}{45}-frac{10}{45}}{ frac{7}{15}+frac{10}{15}-frac{12}{15}}= frac{frac{2}{45}}{frac{5}{15}}=frac{2}{45}* frac{15}{5}=frac{2}{15}$