Have you ever tried to add or subtract fractions that have different denominators? It’s tricky, right? Join Ms. Susanna Post in this lesson to learn how to solve these types of challenging problems!

RACINE - Nine, 18, 27, 36, 45, 54, 63, 72, 81, 90. Summer school instructor Marian McElroy rattled off the multiples of nine from memory in 3.8 seconds as her students squealed in disbelief. "Who can ...

Fractions can be added in different ways: When the denominators are the same, add the numerators. Sometimes the final answer can be simplified. close simplify (a fraction)To reduce a fraction to its ...