How to add fractions that have different denominators | Fractions | Pre-Algebra | Khan Academy
Why the open web links it
Explains how to add fractions with different denominators using the least common multiple.
Linked by 3 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including pbworks.com, proprofs.com, onlinemathlearning.com, ashworthcollege.edu.