Question

Помогите с алгеброй, пожалуйста

Answer 1

Объяснение:

6)

$\frac{7 }{5} \times \frac{12}{35} = \frac{12}{5 \times 5} = \frac{12}{25}$

12)

$\frac{14}{5} \times \frac{7}{2} = \frac{7 \times 7}{5} = \frac{49}{5} = 9 \frac{4}{5}$

18)

$( \frac{11}{12} + \frac{11}{20} ) \times \frac{15}{8} = ( \frac{11 \times 5}{60} + \frac{11 \times 3}{60} ) \times \frac{15}{8} = (\frac{55 + 33}{60} ) \frac{15}{8} = \frac{88}{60} \times \frac{15}{8} = \frac{11}{4} = 2 \frac{3}{4}$

24)

$( \frac{1}{6} + \frac{1}{4} ) \times 9 = 9( \frac{1 \times 2}{12} + \frac{1 \times 3}{12} ) = 9( \frac{2 + 3}{12} ) = 9 \times \frac{5}{12} = \frac{15}{4} = 3 \frac{3}{4}$