9514 1404 393
Answer:
the denominator of each fraction is 2
Step-by-step explanation:
The numerator of a fraction is the number above the fraction bar; the denominator is the number below the fraction bar. In the fraction ...

the numerator is 7, and the denominator is 2.
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Similarly, the number 2 is below the fraction bar and is the denominator in the fraction ...

The numerator is 1, and the denominator is 2.
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The denominators of both of these fractions are 2. Since they are both the same, that value (2) can be used as the <em>common denominator</em> of the sum or difference of these fractions:
