Решить уравнения:

x/9 - 7/9 = 3 7/9

5 4/15 - x/15 = 4 7/15

3 18/19 + x/19 = 15/19

X/9 - 7/9 = 3 7/9

х/9 = 34/9 + 7/9

х/9 = 41/9

х = 41/9 * 9

х = 41

41/9 - 7/9 = 3 7/9

34/9 = 3 7/9

3 7/9 = 3 7/9

5 4/15 - x/15 = 4 7/15

79/15 - х/15 = 67/15

х/15 = 79/15 - 67/15

х/15 = 12/15

х = 12/15 * 15

х = 12

79/15 - 12/15 = 67/15

67/15 = 67/15

4 7/15 = 4 7/15

3 18/19 + x/19 = 15/19

75/19 + х/19 = 15/19

х/19 = 15/19 - 75/19

х/19 = - 60/19

х = - 60/19 * 19

х = - 60

75/19 + (- 60/19) = 15/19

75/19 - 60/19 = 15/19

15/19 = 15/19

X/9 - 7/9 = 3 7/9

х/9=3 7/9+7/9

х/9=3 14/9

х=41/9*9/1

х=41

5 4/15 - x/15 = 4 7/15

-х/15=4 7/15-5 4/15

-х/15=-4/5

-х=-4/5*5/1

-х=-4

х=4

3 18/19 + x/19 = 15/19

х/19=15/19-3 18/19

х/19=-60/19

х=-60/19*19/1

х=-60