Question

помогите пж все задания

Answer 1

Ответ:

14.

$\frac{74 - 26}{25} \div \frac{48}{ - 5} \times \frac{15}{4} = \frac{48}{25} \times \frac{ - 5}{48} \times \frac{15}{4} =( - \frac{ 1}{5} ) \times \frac{15}{4} = - \frac{3}{4}$

15.

$\frac{21}{8} \times \frac{4}{3} \div \frac{7}{6} = \frac{7}{2} \times \frac{6}{7} = 3$

16.

$\frac{2.3 + 1.9}{3.5} = \frac{4.2}{3.5} = \frac{21}{5} \times \frac{2}{7} = \frac{6}{5} = 1.2$

17.

$\frac{2.7}{2.9 - 1.1} = \frac{27}{10} \times \frac{5}{9} = \frac{1}{6}$

18.

$\frac{ - 1.9 + 7.3}{2.4} = \frac{5.4}{2.4} = \frac{27}{5} \times \frac{5}{12} = \frac{9}{4} = 2.25$

19.

$\frac{0.2 \times 0.7}{0.42} = \frac{0.7}{2.1} = \frac{1}{3} = 0.333333.... = 0.3$