Question

даю 25 балов
2-2 4/5-7/15+3+2/3.

Answer 1

$2-2\frac{4}{5} -\frac{7}{15} +3+\frac{2}{3}=5\frac{2}{3} -2\frac{12}{15} -\frac{7}{15} =5\frac{2}{3} -2\frac{19}{15} =5\frac{10}{15} -3\frac{4}{15} =2\frac{6}{15} =2\frac{2}{5} =2,4$