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How Do You Subtract Fractions With the Same Denominator?

Published in Fractions 1 min read

To subtract fractions with the same denominator, simply subtract the numerators and keep the denominator the same.

Here's a breakdown of the process:

  • Identify the Fractions: Ensure the fractions have the same denominator (the bottom number).
  • Subtract the Numerators: Subtract the numerator (the top number) of the second fraction from the numerator of the first fraction.
  • Keep the Denominator: The denominator of the resulting fraction will be the same as the original fractions.
  • Simplify (if possible): Reduce the resulting fraction to its simplest form by dividing both the numerator and denominator by their greatest common factor (GCF).

Example:

Let's say you want to subtract 3/5 from 4/5.

  1. Fractions: 4/5 and 3/5 (same denominator)
  2. Subtract Numerators: 4 - 3 = 1
  3. Keep Denominator: The denominator remains 5.
  4. Result: 1/5

Therefore, 4/5 - 3/5 = 1/5. This fraction is already in its simplest form.

In Summary:

When subtracting fractions with the same denominator, focus on subtracting the numerators while retaining the common denominator. Remember to simplify your answer if possible.

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