Simplify the following
a)
[tex] \frac{5}{8} - \frac{1}{4} + 1 \ \frac{1}{2} [/tex]
b)
[tex]1 \ \frac{2}{3} + \frac{1}{2} - \frac{1}{6} [/tex]

c)
[tex]1 + \frac{1}{2} - \frac{1}{3} [/tex]