What is 3/7 minus 3/9?

Looking for the result of 3/7 - 3/9? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 3/7 by 3/9?

3 7 − 3 9 = (3 × 9) − (3 × 7) 7 × 9 = 6 63 = 2 21
  1. Multiply the numerator of the first term, with the denominator of the second term: 3 × 9 = 27
  2. Multiply the numerator of the second term, with the denominator of the first term: 3 × 7 = 21
  3. Subtract both of these results together to form the new numerator: 27 − 21 = 6
  4. Multiply both denominators together to form the new denominator: 7 × 9 = 63
  5. Combine the results to get the new fraction: 6/63
  6. Simplify the fraction (6/63) by dividing both the numerator and the denominator by their GCD (3):
    • 6/3 = 2
    • 63/3 = 21
  7. This gives: 2/21.

The result of subtracting 3/7 and 3/9 is : 2/21 (or 0.095238095238095 in its decimal form)