[tex]x-6\frac{1}3\leq1\frac{1}2[/tex]
Add 6 1/3 to each side.
[tex]x\leq1\frac{1}2+6\frac{1}3[/tex]
To add together the 1/2 and the 1/3, change them to a common denominator.
[tex]x\leq1\frac{3}6+6\frac{2}6[/tex]
[tex]x\leq7\frac{5}6[/tex]
[tex]\boxed{\{\ x\ |\ x\in\mathbb{R},\ x\leq7\frac{5}6\}}[/tex]
