411 REFERENCE · Wikibooks
Basic Algebra/Rational Expressions and Equations/Adding and Subtracting When the Denominators are the Same
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Vocabulary
Lesson
You have to leave the same denominator and add the nominators:
x + 3x =
x+1 x+1
x + 3x =
x+1
4x
x+1
Example Problems
Practice Games
Practice Problems
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Medium
Hard