Предмет: Математика, автор: anastasiabogaceva876

Помогите пожалуйста решить уравнение, по действиям!!

Приложения:

Ответы

Автор ответа: tanaaburova3288

1

Ответ:

а) 3/4 : х = 6/5 : 4/3

3/4 : х = 6/5 * 3/4

3/4 : х = 9/10

х = 3/4 : 9/10 = 3/4 * 10/9

х = 5/6

проверка:

3/4 : 5/6 = 6/5 : 4/3

9/10 = 9/10

б) 3 : 7,5 = 2,5 : х

2,5 : х = 3 * 10/75

2,5 : х = 2/5

х = 25/10 : 2/5 = 25/10 * 5/2

х = 25/4

проверка:

3 : 7,5 = 2,5 : 25/4

2/5 = 2/5

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