Выполните сложение:
а) $3\frac{1}{2} + \frac{1}{2}$;
б) $\frac{3}{4} + 1\frac{1}{4}$;
в) $4\frac{1}{3} + 1\frac{2}{3}$;
г) $3\frac{2}{3} + 1\frac{2}{3}$;
д) $\frac{5}{7} + 5\frac{4}{7}$.
$3\frac{1}{2} + \frac{1}{2} = 3 + \frac{1}{2} + \frac{1}{2} = 3 + \frac{2}{2} = 3 + 1 = 4$
$\frac{3}{4} + 1\frac{1}{4} = \frac{3}{4} + 1 + \frac{1}{4} = \frac{4}{4} + 1 = 1 + 1 = 2$
$4\frac{1}{3} + 1\frac{2}{3} = 4 + \frac{1}{3} + 1 + \frac{2}{3} = 5 + \frac{3}{3} = 5 + 1 = 6$
$3\frac{2}{3} + 1\frac{2}{3} = 3 + \frac{2}{3} + 1 + \frac{2}{3} = 4 + \frac{4}{3} = 4 + 1\frac{1}{3} = 4 + 1 + \frac{1}{3} = 5 + \frac{1}{3} = 5\frac{1}{3}$
$\frac{5}{7} + 5\frac{4}{7} = \frac{5}{7} + 5 + \frac{4}{7} = 5 + \frac{9}{7} = 5 + 1\frac{2}{7} = 5 + 1 + \frac{2}{7} = 6 + \frac{2}{7} = 6\frac{2}{7}$
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