Addition & Subtraction
Adding & Subtracting Rational Expressions
Review
Adding and subtracting fractions is a familiar process. The key is finding the Least Common Denominator (LCD) which is the smallest whole number that is divisible by each value in the denominator. In order to find the LCD, find the Least Common Multiple (LCM) of the values in the denominator(s). To review how to find the LCM select the following link.