To add and subtract rational numbers, you must first identify their common denominator. Using this common denominator, convert each fraction to an equivalent fraction. Next, modify the numerators while maintaining the same common denominator. Finally, if at all possible, simplify the resulting fraction. For example: `\frac{1}{4} + \frac{1}{6} = \frac{3}{12} + \frac{2}{12} = \frac{5}{12}`.

The add and subtract of rational numbers are very useful in calculation of algebra, calculus etc.

Algebra 1

Algebra Foundations