Question

Решить,расписывая действия

Answer 1

$1)\frac{5}{7}+\frac{4}{3}=\frac{5*3}{21}+\frac{4*7}{21}=\frac{15}{21}+\frac{28}{21}=\frac{15+28}{21}=\frac{43}{21}=2\frac{1}{21} \\ \\ \\ 2)\frac{1}{2}+\frac{2}{3}=\frac{1*3}{6}+\frac{2*2}{6}=\frac{3}{6}+\frac{4}{6}=\frac{7}{6}=1\frac{1}{6}$