8. d)
[tex]24 \leqslant 4x = > x \geqslant 6 = > x = {6, 7, 8, ...}[/tex]
e)
[tex]30> 6x = > x < 5 = > x = {4, 3, 2, ...}[/tex]
f)
[tex]35 \leqslant 7x = > x \geqslant 5 = > x = 5, 6, 7, ...[/tex]
9
d)
[tex]20 - 8x \geqslant 40 - 3x = > - 20 \geqslant 5x = > x \leqslant - 4 = > x = - 4, - 5, - 6, ...[/tex]
e)
[tex]24 - 3x < 60 + 6x = > - 36 < 9x = > x > - 4 = > x = - 3, - 2, - 1, ...[/tex]
f)
[tex]75 - 15x > 40 - 8x = > 35 > 7x = > x < 5 = > x = 4, 3, 2, ...[/tex]
