Question

Люди. Помогите пожалуйста

Answer 1

Пошаговое объяснение:

58.

в)

$12 \div 25 = \frac{7}{15} \div x \\ \frac{12}{25} = \frac{7}{15x} \\ 180x = 175 \\ x = \frac{175}{180} \\ \frac{35}{36}$

б)

$12 \div 29 = \frac{1}{58} \div x \\ \frac{12}{29} = \frac{1}{58x} \\ 696x = 29 \\ x = \frac{29}{696}$

а)

$14 \div 15 = 3 \div x \\ \frac{14}{15} = \frac{3}{x} \\ 14x = 45 \\ x = 45 \div 14 \\ x = 3 \frac{3}{14}$

57.

а)

$x \div \frac{1}{2} = 3 \div 5 \\ \frac{x}{2} = 0.6 \\ x = 1.2$

б)

$x \div \frac{2}{3} = 3 \div 4 \\ \frac{2x}{3} = 0.75 \\ 2x = 0.75 \times 3 \\ 2x = 2.25 \\ x = 4.5$

в)

$x \div 5 = 7 \div \frac{1}{2} \\ \frac{x}{5} = 3.5 \\ x = 17.5$

г)

$x \div 6 = \frac{1}{3} \div 8 \\ \frac{x}{6} = \frac{1}{24} \\ x = \frac{1}{4} = 0.25$