Curated OER
Undefined Fractions
In this undefined fractions worksheet, 9th graders solve 10 different problems related to solving various undefined fractions. They determine the value of x in each that makes the fractions undefined. Students determine when the...
Oswego City School District
Regents Exam Prep Center: Undefined Fractions
This algebra tutorial helps students determine when a fraction is undefined and includes examples with rational expressions.
Help Algebra
Help algebra.com: Rational Expressions
In addition to defining rational expressions, this resource demonstrates how to find the excluded values and zeros of the expressions.