3x-5 < 4x+3 <= -2x-9 tolong bantuannya, kok bingung aku yaa

3x - 5 < 4x + 3 ..... (1)
4x - 3x > -5 - 3
x > - 8 .......... (1)

4x + 3 <= -2x - 9........ (2)
4x + 2x <= -9 - 3
6x <= -12
x <= -12/6
x <= -2 ...... (2)

(1) irisan (2)

-8 < x <= -2

Bab Pertidaksamaan
Matematika SMP Kelas VIII

3x - 5 < 4x + 3 <= -2x - 9

3x - 5 < 4x + 3
3x - 4x < 3 + 5
-x < 8
x > 8 : (-1)
x > -8
-8 < x

4x + 3 <= -2x - 9
4x + 2x <= -9 - 3
6x <= -12
x <= -12 : 6
x <= -2

-8 < x <= -2