Вычисли разность: a) 1 - 4/9 = ? б) 5 - 2/3 = ? в) 7 - 2 3/8 = ? г) 3 2/5 - 4/5 = ? д) 4 1/6 - 1 5/6 = ? e) 6 6/15 - 2 9/15 = ?

Решаем:
a) 1 - \(\frac{4}{9}\) = \(\frac{9}{9}\) - \(\frac{4}{9}\) = \(\frac{5}{9}\)
б) 5 - \(\frac{2}{3}\) = 4 \(\frac{3}{3}\) - \(\frac{2}{3}\) = 4 \(\frac{1}{3}\)
в) 7 - 2 \(\frac{3}{8}\) = 6 \(\frac{8}{8}\) - 2 \(\frac{3}{8}\) = 4 \(\frac{5}{8}\)
г) 3 \(\frac{2}{5}\) - \(\frac{4}{5}\) = 2 \(\frac{7}{5}\) - \(\frac{4}{5}\) = 2 \(\frac{3}{5}\)
д) 4 \(\frac{1}{6}\) - 1 \(\frac{5}{6}\) = 3 \(\frac{7}{6}\) - 1 \(\frac{5}{6}\) = 2 \(\frac{2}{6}\) = 2 \(\frac{1}{3}\)
e) 6 \(\frac{6}{15}\) - 2 \(\frac{9}{15}\) = 5 \(\frac{21}{15}\) - 2 \(\frac{9}{15}\) = 3 \(\frac{12}{15}\) = 3 \(\frac{4}{5}\)