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McGraw Hill Glencoe Algebra 2, 2012 View details

5. Operations with Radical Expressions

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Exercise 86 Page 421

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

7/8

Practice makes perfect

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators. 1/2 + 3/8Since 8 is a multiple of 2, we can multiply both the numerator and denominator of 12 by 4 to create a common denominator.

1/2+3/8

ExpandFrac

a/b=a * 4/b * 4

1 * 4/2 * 4+3/8

Multiply

4/8+3/8

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

4/8+3/8

AddFrac

Add fractions

4+3/8

AddTerms