Rewrite the terms as similar expressions. Since the least common denominator of the three fractions is 6, multiply the numerator and the denominator of the first term by 2.
[tex]-\frac{4}{6}a+\frac{5}{6}a-\frac{1}{6}[/tex]Combine like terms. Terms are considered like terms or similar terms if they both have the same literal coefficients. Thus, combine the first and the second term. Factor out the variable.
[tex](-\frac{4}{6}+\frac{5}{6})a-\frac{1}{6}[/tex]Add the fractions. Add the numerators and then copy the common denominator.
[tex]\begin{gathered} \frac{-4+5}{6}a-\frac{1}{6} \\ =\frac{1}{6}a-\frac{1}{6}\text{ or }\frac{a}{6}-\frac{1}{6} \end{gathered}[/tex]
