Question

Solve: $1\frac{2}{3}+2\frac{4}{5}$

Answer 1

$1\frac{2}{3}+2\frac{4}{5}$

$=\frac{(3\times 1)+2}{3}+\frac{(5\times 2)+4}{5}$

$=\frac{5}{3}+\frac{14}{5}$

$=\frac{25+42}{15}$

$=\frac{67}{15}$

$=4\frac{7}{15}$

$\therefore 1\frac{2}{3}+2\frac{4}{5}=4\frac{3}{15}$.