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Home > CCAA > Chapter 7 Unit 9 > Lesson CC3: 7.2.1 > Problem 7-42
7-42.
Simplify the following expressions.
Change to addition.
Find a common denominator.
Find a common denominator.
Refer to part (a).
Recall that adding a negative number is essentially subtraction.
Remember that when you subtract a negative number you are essentially adding it.
Remember, the solution will have the same sign as the larger number.