1) 4x - 35 = 5x + 6
4x - 5x = 6 + 35
- x = 41
x = - 41
2)17x - 12x = 19 - x
5x + x = 19
6x = 19
x = 3 1/19
3) это не уравнение
4) 32x - 24 + 3x = 120
35x - 24 = 120
35x = 144
x = 4 4/35