Question

3/7m+9/14m-3/4m якщо m=4,2/3

Answer 1

Ответ:

$1\frac{1}{2}$

Объяснение:

$\frac{3}{7}m+\frac{9}{14}m-\frac{3}{4}m=\frac{12}{28}m+\frac{18}{28}m-\frac{21}{28}m=\frac{9}{28}m\\\\\frac{9}{28}\cdot4\frac{2}{3}=\frac{9}{28}\cdot\frac{14}{3}=\frac{3}{2}=1\frac{1}{2}$