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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
< 1min

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

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

Easy
< 1min

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.

Easy
< 1min

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

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

Easy
< 1min
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Outcomes

MGSE9-12.A.APR.7

Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.

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