Решите уравнение: 4) 3/8x + 7/12x - 5/6x = 9/32; 5) 2 1/3 : x - 1 1/6 = 1 5/9; 6) 2 1/3 : (x - 1 1/6) = 1 5/9:

4)

3/8x + 7/12x - 5/6x = 9/32;

9/24x + 14/24x - 20/24x = 9/32

3/24x = 9/32

x = 9/32 * 8

x = 9/4

x = 2 1/4

5)

2 1/3 : x - 1 1/6 = 1 5/9;

2 1/3 : x = 1 5/9 + 1 1/6

2 1/3 : x = 1 10/18 + 1 3/18

2 1/3 : x = 2 13/18

x = 2 1/3 : 2 13/18

x = 7/3 * 18/49

x = 6/7

6)

2 1/3 : (x - 1 1/6) = 1 5/9

x - 1 1/6 = 2 1/3 : 1 5/9

x - 1 1/6 = 7/3 * 9/14

x - 1 1/6 = 3/2

x = 3/2 + 1 1/6

x = 9/6 + 1 1/6

x = 1 10/6 = 2 4/6

x = 2 2/3