In this Math Made Easy tutorial the author shows how to subtract positive and negative numbers. He says that because of the numerous combination of positive and negative numbers it adds to a lot of confusion. Now he shows a trick of how to add positive numbers to negative numbers showing that it's equivalent to subtracting the negative number from the positive number. He shows that if you want to subtract a negative number from a positive number we should actually cancel all the signs and then add the value of the negative number to the positive number. He goes on and explains various examples of how to do this. In this videos the author gives good examples to beginners of how to subtract positive and negative numbers.