Решите уравнение: 2 1/4:3 1/3=1,4: (1/3 у); 16: (3s) = 28:7

2 1/4 : 3 1/3 = 1,4 : (1/3 у);

9/4 : 10/3 = 1 4/10 : (1/3 у);

9/4 : 10/3 = 14/10 : 1/3 у;

9/4 * 3/10 = 14/10 * 3/1 у;

27/40 = 42/10 у;

27/40 : 42/10 = 42/10 у: 42/10;

27/40 * 10/42 = у;

у = 270/1680;

у = 27/168;

у = 9/56.

Проверка:

2 1/4 : 3 1/3 = 1,4 : (1/3 * 9/56);

9/4 * 3/10 = 14/10 * 3/1 * 9/56;

27/40 = 378/560;

27/40 = 27/40.

Ответ: у = 9/56.

16 : (3s) = 28 : 7;

16 : 3s = 4;

3s = 16 : 4;

3s = 4;

s = 4 : 3;

s = 4/3.

s = 1 1/3.

Проверка:

16 : 3 * 1 1/3 = 28 : 7;

16 : 3 * 4/3 = 4;

16 : 4 = 4;

4 = 4.

Ответ: s = 1 1/3.