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Pearson Algebra 2 Common Core, 2011

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Pearson Algebra 2 Common Core, 2011 View details

4. Rational Expressions

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Exercise 64 Page 533

To add or subtract fractions, they need to have the same denominator.

17/38

Practice makes perfect

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 5/19 + 7/38Since 38 is a multiple of 19, we can multiply both the numerator and denominator of 519 by 2 to create a common denominator.

5/19+7/38

a/b=a * 2/b * 2

5*2/19*2+7/38

Multiply

10/38+7/38

Now that we have a common denominator, we can proceed to simplifying the expression.

10/38+7/38

Add fractions

10+7/38

Add terms

17/38

Subchapter links

Lesson Check p.530

Standardized Test Prep p.533

Mixed Review p.533