Ответ:\(2\frac{1}{5}+3\frac{2}{5}=5\frac{3}{5}\).\(4\frac{2}{7}+1\frac{3}{7}=5\frac{5}{7}\).\(1\frac{1}{2}+2\frac{1}{3}=3+\frac{5}{6}=3\frac{5}{6}\).\(3\frac{3}{4}+2\frac{1}{8}=5\frac{7}{8}\).