1. Решите уравнение: a) 2x = 6; б) 4x = -2; в) -5x = -2; г) 2х + 18 = 0.

а) 2x = 6

x = 6 / 2

x = 3

б) 4x = -2

x = -2 / 4

x = -1 / 2

x = -0.5

в) -5x = -2

x = -2 / -5

x = 0.4

г) 2x + 18 = 0

2x = -18

x = -18 / 2

x = -9