Question

Помогите пожалуйста!

А) 2/3*9/12 Б) 5 1/2*1 3/11 В) 4/6*5/6*6/7*7/8*8/9

Answer 1

A) $\frac{2}{3} * \frac{9}{12} = \frac{2 * 9}{3 * 12} = \frac{9}{3 * 6} = \frac{3}{6} = \frac{1}{2} = 0.5$

Б) $5\frac{1}{2} * 1\frac{3}{11} = \frac{11}{2} * \frac{14}{11} = \frac{11*14}{2*11} = \frac{14}{2} = 7$

В)$\frac{4}{6}* \frac{5}{6}* \frac{6}{7}* \frac{7}{8} * \frac{8}{9} = \frac{4*5*6*7*8}{6*6*7*8*9}=\frac{4*5}{6*9} = \frac{2*5}{3*9} = \frac{10}{27}$