Question

решите уравнения 1) 10/х=5/12 2)х/20=3/4​

Answer 1

Ответ:

1)

$x = 24$

2)

$x = 15$

Пошаговое объяснение:

1)

$\frac{10}{x} = \frac{5}{12}$

$\frac{x}{10} = \frac{12}{5}$

$x = \frac{12 \times 10}{5}$

$x = \frac{120}{5}$

$x = 24$

Проверка:

$\frac{10}{24} = \frac{2 \times 5}{2 \times 12}$

$\frac{10}{24} = \frac{10}{24}$

2)

$\frac{x}{20} = \frac{3}{4}$

$x = \frac{3 \times 20}{4}$

$x = \frac{60}{4}$

$x = 15$

Проверка:

$\frac{15}{20} = \frac{3}{4}$

$\frac{15}{20} = \frac{5 \times 3}{5 \times 4}$

$\frac{15}{20} = \frac{15}{20}$