Пошаговое объяснение:

2 1/6х - 3 3/4 = 4 1/6х - 5 3/4х

2 2/12х - 3 3/4 = 4 2/12х - 5 9/12х

2 2/12х - 3 3/4 = -1 7/12х

2 2/12х + 1 7/12х = 3 3/4

3 9/12х = 3 3/4

45/12х = 15/4

х = 15/4 : 45/12

х = 15/4 * 12/45

х = 1/1 * 3/3

х = 1 * 1

х = 1

1/3х - 2 = 5 - 2/3х

1/3х + 2/3х = 5 + 2

3/3х = 7

х = 7