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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

5. Adding and Subtracting Real Numbers

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Exercise 41 Page 34

Instead of subtracting a negative number, you can add. Make sure that the fractions have the same denominator.

15/16

Practice makes perfect

Subtracting a negative number is the same as adding its positive counterpart. Let's use this to simplify the expression. 7/16 -(- 1/2 ) ⇔ 7/16 + 1/2When adding fractions, they must have the same denominator. Since 2 * 8 =16, we can create a common denominator by multiplying the numerator and denominator in 12 by 8. 7/16 + 1* 8/2* 8 ⇔ 7/16 + 8/16 Now that they have the same denominator, they can be added.

7/16 + 8/16

Add fractions

7+8/16

Add terms

15/16

The sum of the fractions is 1516.

Subchapter links

Lesson Check p.33

Practice and Problem-Solving Exercises p.34-36

Standardized Test Prep p.36

Mixed Review p.36