Question

решите пожалуйста!1!1!1!!1!11!​

Answer 1

Ответ:

3)ответ:3.5

$1)4 \div \frac{4}{7} = 4 \times \frac{7}{4} = 7$

$2)7 \times 0.3 = 2.1 \\ 3)2.88 \div 4.8 = 28.8 \div 48 = 0.6$

$4)2.1 \div 0.6 = 21 \div 6 = 3 \frac{3}{6} = 3.5$

4) ответ:2

$1)0.5 + \frac{1}{18} = \frac{1}{2} + \frac{1}{18} = \\ \frac{9}{18} + \frac{1}{18} = \frac{10}{18} = \frac{5}{9}$

$2)1 \frac{1}{6} - \frac{7}{18} = 1 \frac{3}{18} - \frac{7}{18} = \\ = \frac{21}{18} - \frac{7}{18} = \frac{14}{18} = \frac{7}{9}$

$3) \frac{7}{9} \div 2 \frac{4}{5} = \frac{7}{9} \div \frac{14}{5} = \frac{7}{9} \times \frac{5}{14} = \\ = \frac{5}{18}$

4)

$\frac{5}{9} \div \frac{5}{18} = \frac{5}{9} \times \frac{18}{5} = 2$