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In the following exercises, perform the indicated operation and write the result as a mixed number in simplified form. $$6-\frac{2}{5}$$

Short Answer

Expert verified
5 \( \frac{3}{5} \)

Step by step solution

01

Convert the Whole Number to a Fraction

First, write the whole number 6 as a fraction with the same denominator as \(\frac{2}{5}\). The whole number 6 can be written as \(\frac{30}{5}\).
02

Subtract the Fractions

Now subtract the fractions: \(\frac{30}{5} - \frac{2}{5}\). Since the fractions have the same denominator, subtract the numerators: \(\frac{30-2}{5} = \frac{28}{5}\).
03

Convert to Mixed Number

Convert the improper fraction \(\frac{28}{5}\) to a mixed number. Divide 28 by 5 to get 5 with a remainder of 3. Therefore, \(\frac{28}{5}\) is 5 \(\frac{3}{5}\).
04

Simplify the Mixed Number

The fraction \(\frac{3}{5}\) is already in its simplest form, so the final answer is 5 \(\frac{3}{5}\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Mixed Numbers
Mixed numbers are a combination of a whole number and a fraction. They are used to represent values that lie between whole numbers. For example, instead of writing an improper fraction like \(\frac{28}{5}\), we often prefer to use a mixed number. This makes it easier to understand and manage. Here’s how you convert an improper fraction to a mixed number:
  • Divide the numerator by the denominator to get the whole number part.
  • The remainder becomes the numerator of the fractional part.
  • Keep the same denominator for the fractional part.
So, \(\frac{28}{5}\) converts to 5 \(\frac{3}{5}\), because 28 divided by 5 is 5 with a remainder of 3.
Improper Fractions
An improper fraction has a numerator that is larger than or equal to its denominator. This means the fraction's value is 1 or greater. Improper fractions are useful in calculations, but we often convert them to mixed numbers for practical use. Here are the steps for converting a whole number to an improper fraction:
  • Multiply the whole number by the denominator of the fraction you are working with.
  • Write the result as the numerator over the same denominator.
For example, to convert 6 to a fraction with a denominator of 5:
  • Multiply: 6 * 5 = 30.
  • Write as a fraction: \(\frac{30}{5}\).
Simplification of Fractions
Simplifying fractions makes them easier to understand and compare. A fraction is simplified when the numerator and denominator have no common factors other than 1. Here’s how you can simplify fractions:
  • Find the greatest common divisor (GCD) of the numerator and denominator.
  • Divide both the numerator and the denominator by their GCD.
For instance, the fraction 6/8 simplifies to 3/4 because the GCD of 6 and 8 is 2. Here's another example: The fraction \(\frac{3}{5}\) is already in its simplest form because 3 and 5 have no common factors other than 1.

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