What is 3/9 minus 1/7?

Looking for the result of 3/9 - 1/7? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 3/9 by 1/7?

3 9 − 1 7 = (3 × 7) − (1 × 9) 9 × 7 = 12 63 = 4 21
  1. Multiply the numerator of the first term, with the denominator of the second term: 3 × 7 = 21
  2. Multiply the numerator of the second term, with the denominator of the first term: 1 × 9 = 9
  3. Subtract both of these results together to form the new numerator: 21 − 9 = 12
  4. Multiply both denominators together to form the new denominator: 9 × 7 = 63
  5. Combine the results to get the new fraction: 12/63
  6. Simplify the fraction (12/63) by dividing both the numerator and the denominator by their GCD (3):
    • 12/3 = 4
    • 63/3 = 21
  7. This gives: 4/21.

The result of subtracting 3/9 and 1/7 is : 4/21 (or 0.19047619047619 in its decimal form)