6. Решите уравнения. a) x + (-3) = -18 б) y: 2 = -20 B)x(-6) = -22 г) -4y = 0 д)-15-2х = -27 e)-7y+ 14 = 28

1. a) x + (-3) = -18

   x - 3 = -18

   x = -18 + 3

   x = -15

2. б) y : 2 = -20

   y = -20 ⋅ 2

   y = -40

3. в) x ⋅ (-6) = -22

   x = -22 : (-6)

   x = 22/6 = 11/3

4. г) -4y = 0

   y = 0 : (-4)

   y = 0

5. д) -15 - 2x = -27

   -2x = -27 + 15

   -2x = -12

   x = -12 : (-2)

   x = 6

6. e) -7y + 14 = 28

   -7y = 28 - 14

   -7y = 14

   y = 14 : (-7)

   y = -2

Ответ: a) x = -15; б) y = -40; в) x = 11/3; г) y = 0; д) x = 6; e) y = -2.