найдите корни уравнений
2х + 3 = х - 6
z + 4 - 3 = 2z
5 - 3y = 4 - 2y
7 - 3x = 4x - 9
6a - 1 = 3a+ 7
10y - 3 = 5 + 3y

спасибо большое!

2x + 3 = x - 62x - x = -6 - 3x = -9z + 4 - 3 = 2zz - 2z = 3 - 4-z = -1z = 15 - 3y = 4 - 2y-3y + 2y = 4 - 5-y = -1y = 17 - 3x = 4x - 9-3x - 4x = -9 - 7-7x = -167x = 16x = 16/76a - 1 = 3a + 76a - 3a = 7 + 13a = 8a = 8/310y - 3 = 5 + 3y10y - 3y = 5 + 37y = 8y = 8/7