This video is a simple math video showing how to add and subtract fractions using different denominators. It begins with a man explaining briefly and sitting in front of a piece of paper. He writes out a group of fractions each one with different denominators, ending in three and five. To add appropriately, on must find a common denominator, which is fifteen. So he multiplies each by five and three, raising the denominators to fifteen. This will raise the fractions to six-fifteenths and twenty-fifteenths. Once added it comes out to twenty-six-fifteenths. Now you must divide into the fraction to make it equal. Since fifteen can go into twenty-six only once you have a remainder of nine, leaving your answer which is one and nine-fifteenths

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