Вычислите сумму:
а) $2\frac{1}{4} + 1\frac{1}{4}$;
б) $7\frac{1}{3} + 2\frac{1}{3}$;
в) $6\frac{1}{5} + 3\frac{2}{5}$;
г) $2\frac{3}{5} + 1\frac{2}{5}$;
д) $4\frac{2}{9} + 1\frac{8}{9}$;
е) $2\frac{9}{11} + 1\frac{4}{11}$;
ж) $3\frac{1}{9} + 2\frac{2}{9}$;
з) $3\frac{7}{10} + 2\frac{9}{10}$;
и) $8\frac{4}{5} + 9\frac{2}{5}$.
$2\frac{1}{4} + 1\frac{1}{4} = 3\frac{2}{4} = 3\frac{1}{2}$
$7\frac{1}{3} + 2\frac{1}{3} = 9\frac{2}{3}$
$6\frac{1}{5} + 3\frac{2}{5} = 9\frac{3}{5}$
$2\frac{3}{5} + 1\frac{2}{5} = 3\frac{5}{5} = 4$
$4\frac{2}{9} + 1\frac{8}{9} = 5\frac{10}{9} = 5 + 1\frac{1}{9} = 6\frac{1}{9}$
$2\frac{9}{11} + 1\frac{4}{11} = 3\frac{13}{11} = 3 + 1\frac{2}{11} = 4\frac{2}{11}$
$3\frac{1}{9} + 2\frac{2}{9} = 5\frac{3}{9} = 5\frac{1}{3}$
$3\frac{7}{10} + 2\frac{9}{10} = 5\frac{16}{10} = 5\frac{8}{5} = 5 + 1\frac{3}{5} = 6\frac{3}{5}$
$8\frac{4}{5} + 9\frac{2}{5} = 17\frac{6}{5} = 17 + 1\frac{1}{5} = 18\frac{1}{5}$
Пожауйста, оцените решение