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Home > A2C > Chapter 7 > Lesson 7.3.5 > Problem 7-225


Add or subtract and simplify each of the following expressions. Justify that each step of your process makes sense.

  1. Because the denominators are the same, simply add the numerators.

  1. To get a common denominator:

    When subtracting, distribute the negative to all terms in the numerator of the second fraction.