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McGraw Hill Glencoe Geometry, 2012

MH

McGraw Hill Glencoe Geometry, 2012 View details

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Exercise 1 Page 913

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

$\frac{7}{8}$

Practice makes perfect

When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators.

\frac{1}{2} + \frac{3}{8}

Since

8

is a multiple of

2,

we can multiply both the numerator and denominator of

\frac{1}{2}

by

4

to create a common denominator.

\frac{1}{2} + \frac{3}{8}

$\frac{a}{b} = \frac{a \cdot 4}{b \cdot 4}$

\frac{1 ( 4 )}{2 ( 4 )} + \frac{3}{8}

▼

Multiply

Identity Property of Multiplication

\frac{4}{2 ( 4 )} + \frac{3}{8}

Multiply

\frac{4}{8} + \frac{3}{8}

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

\frac{4}{8} + \frac{3}{8}

Add fractions

\frac{4 + 3}{8}

Add terms

\frac{7}{8}

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