А) 11/х - 2 = 11/2
11/х = 11/2 + 2
11/х = 11/2 + 4/2
11/х = 15/2
х = 11 : 15/2
х = 11 * 2/15
х = 22/15
11 : 22/15 - 2 = 11/2
11 * 15/22 - 2 = 11/2
1/1 * 15/2 - 2 = 11/2
15/2 - 2 = 11/2
15/2 - 4/2 = 11/2
11/2 = 11/2
б) 7/х + 6 = - 7/6
7/х = - 7/6 - 6
7/х = - 7/6 - 36/6
7/х = - 43/6
х = 7 : (- 43/6)
х = 7 * (- 6/43)
х = - 42/43
7 : (-42/43) + 6 = - 7/6
7 * (- 43/42) + 6 = - 7/6
1/1 * (- 43/6) + 6 = - 7/6
- 43/6 + 6 = - 7/6
- 43/6 + 36/6 = - 7/6
- 7/6 = - 7/6