GED Math Practice Questions: Computing with Rational Expressions

In the Mathematical Reasoning section of the GED, you may have to perform some computations with rational expressions. The following example questions ask you to subtract and multiply numeric fractions.

Practice questions

1. Subtract the following rational expressions:

   

2. Multiply the following rational expressions:

   

Answers and explanations

1. The result is

   

   Start by factoring the denominator in both rational expressions:

   

   Multiply the first expression by

   

   and the second fraction by

   

   and you have:

   

2. The result is

   

   Here's how you find it: