# 5.02 Adding and subtracting rational expressions

## Interactive practice questions

Find the least common denominator for this pair of algebraic fractions:

$\frac{s}{3}$s3 and $\frac{s}{9}$s9

Easy
Less than a minute

Find the least common denominator for this pair of algebraic fractions:

$\frac{a}{2}$a2 and $\frac{b}{3}$b3

In an upcoming election, it is anticipated that the number of men who vote, $x$x, will be greater than the number of women who vote, $y$y.

Each expression below represents the expected number of people who will NOT vote in two different counties.

Find the least common denominator for this pair of algebraic fractions:

$\frac{1}{18h}$118h and $\frac{1}{9h}$19h

### Outcomes

#### A2.NQ.A.2

Create and recognize equivalent expressions involving radical and exponential forms of expressions.

#### A2.APR.A.4

Add, subtract, multiply and divide rational expressions.