Question

ото мне в школу на до ехать быстрее​

Answer 1

2)

$\frac{4 }{15} \frac{3}{7} = \frac{28}{105} \frac{45}{105}$

3)

$\frac{4}{9} \frac{1}{6} = \frac{24}{54} \frac{9}{54}$

4)

$\frac{11}{12} + \frac{5}{18} = \frac{33}{36} + \frac{10}{36} = \frac{43}{36} = 1 \frac{7}{36}$

5)

$\frac{1}{x} = \frac{4}{16} \\ \times = 16 \div 4 \\ x = 4$

$\frac{x}{4} = \frac{1}{2} \\ x = 4 \div 2 \\ x = 2$

$\frac{4}{12} = \frac{2}{x} \\ x = 12 \div 2 \\ x = 6$