Решите пожалуйста 2 функции

1. {3x + 4 <= 4x + 6 {x - 5 <= 4-2x

{3x - 4x <= 6 - 4 {x + 2x <= 4+5

{-x <= 2 / :(-1) {3x <= 9 / : 3

{x => -2 {x <= 3

2.

{2y - (y-4) < 6 {y > 3(2y-1) + 18

{2y - y + 4 < 6 {y > 6y - 3 + 18

{2y - y < 6 - 4 {y - 6y > -3 + 18

{y < 2 {-5y > 15 / : (-5)

{y < 2

{y < -3