Question

(2 целых 1/4 минус 1 целая 2/5) х 15/34 + 3 целых 5/8

Answer 1

Ответ:

$4$

Пошаговое объяснение:

$(2 \frac{1}{4} - 1 \frac{2}{5} ) \times \frac{15}{34} + 3 \frac{5}{8} \\ ( \frac{9}{4} - \frac{7}{5} ) \times \frac{15}{34} + \frac{29}{8} \\ \frac{17}{20} \times \frac{15}{34} + \frac{29}{8} \\ \frac{1}{4} \times \frac{3}{2} + \frac{29}{8} \\ \frac{3}{8} + \frac{29}{8} \\ 4$

Answer 2

$(2 \frac{1}{4} - 1 \frac{2}{5} ) \times \frac{15}{34} + 3 \frac{5}{8} = ( \frac{9}{4} - \frac{7}{5} ) \times \frac{15}{34} + \frac{29}{8} = \\ = ( \frac{45}{20} - \frac{28}{20} ) \times \frac{15}{34} + \frac{29}{8} = \frac{17}{20} \times \frac{15}{34} + \frac{29}{8} = \frac{3}{8} + \frac{29}{8} = \frac{32}{8} = 4$