1)

[tex]6 < x < 10\\\\x=7\\\\x=8\\\\x=9[/tex]

2)

[tex]5.1\leq y\leq \frac{20}{3} \\\\5.1\leq y\leq 6\frac{2}{3} \\\\y=6[/tex]

3)

[tex]4.8 < |z|\leq 10\\\\z=5\\\\z=-5\\\\z=6\\\\z=-6\\\\z=7\\\\z=-7\\\\z=8\\\\z=-8\\\\z=9\\\\z=-9\\\\z=10\\\\z=-10[/tex]