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Glencoe Math: Course 2, Volume 1 View details

3. Add and Subtract Like Fractions

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Exercise 19 Page 289

To add or subtract fractions with the same denominator, we add or subtract their numerators.

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Practice makes perfect

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with the same denominator. 15/18 - 13/18 Let's simplify the expression.

15/18-13/18

a-b = a+(- b)

15/18+(- 13/18)

Put minus sign in numerator

15/18+-13/18

Add fractions

15+(-13)/18

Add terms

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a/b=.a /2./.b /2.

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