Выполните вычитание. Вариант 3: 1) 2/21 − 1/14; 2) 7/9 − 1/6; 3) 5/17 − 1/34; 4) 4/5 − 11/15; 5) 3/18 − 4/27; 6) 3/8 − 1/12; 7) 11/14 − 1/7; 8) 11/63 − 1/9; 9) 12/15 − 2/5; 10) 11/27 − 1/9.

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Accepted Answer

\(\frac{2}{21}-\frac{1}{14}=\frac{4}{42}-\frac{3}{42}=\frac{1}{42}\).
\(\frac{7}{9}-\frac{1}{6}=\frac{14}{18}-\frac{3}{18}=\frac{11}{18}\).
\(\frac{5}{17}-\frac{1}{34}=\frac{10}{34}-\frac{1}{34}=\frac{9}{34}\).
\(\frac{4}{5}-\frac{11}{15}=\frac{12}{15}-\frac{11}{15}=\frac{1}{15}\).
\(\frac{3}{18}-\frac{4}{27}=\frac{9}{54}-\frac{8}{54}=\frac{1}{54}\).
\(\frac{3}{8}-\frac{1}{12}=\frac{9}{24}-\frac{2}{24}=\frac{7}{24}\).
\(\frac{11}{14}-\frac{1}{7}=\frac{11}{14}-\frac{2}{14}=\frac{9}{14}\).
\(\frac{11}{63}-\frac{1}{9}=\frac{11}{63}-\frac{7}{63}=\frac{4}{63}\).
\(\frac{12}{15}-\frac{2}{5}=\frac{4}{5}-\frac{2}{5}=\frac{2}{5}\).
\(\frac{11}{27}-\frac{1}{9}=\frac{11}{27}-\frac{3}{27}=\frac{8}{27}\).

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