a) (3y - 1) - (2y + 4) + y = 33
3y - 1 - 2y - 4 + y = 33
(3y - 2y + y) + (-1 - 4) = 33
2y - 5 = 33
2y = 33 + 5
2y = 38
y = \(\frac{38}{2}\)
y = 19
**Ответ: y = 19**
б) 15x = (6x - 1) - (x + 18)
15x = 6x - 1 - x - 18
15x = 5x - 19
15x - 5x = -19
10x = -19
x = \(\frac{-19}{10}\)
x = -1.9
**Ответ: x = -1.9**