Just some review for what we've already learned for adding and subtracting fractions:
When the fractions have the same denominator, simply add or subtract the numerators, keep the denominator the same, and then simplify.
When the fractions have unlike denominators:
1. Find the Least Common Denominator (The LCM of the denominators)
2. Convert to equivalent fractions - "rename" the fractions with the LCD
3. Follow the procedure for adding/subtracting with the same denominator
Remember, we must find the LCD and rename all the fractions when comparing fractions as well.
....but here's a little something extra for you:
The following chart illustrates the "Butterfly Method" we're going to talk about in class today. A lot of people find it easy to use when you're adding or subtracting with two fractions. *Don't forget to simplify!*
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