What is 8/7 minus 3/9?

Looking for the result of 8/7 - 3/9? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 8/7 by 3/9?

8 7 − 3 9 = (8 × 9) − (3 × 7) 7 × 9 = 51 63 = 17 21
  1. Multiply the numerator of the first term, with the denominator of the second term: 8 × 9 = 72
  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: 72 − 21 = 51
  4. Multiply both denominators together to form the new denominator: 7 × 9 = 63
  5. Combine the results to get the new fraction: 51/63
  6. Simplify the fraction (51/63) by dividing both the numerator and the denominator by their GCD (3):
    • 51/3 = 17
    • 63/3 = 21
  7. This gives: 17/21.

The result of subtracting 8/7 and 3/9 is : 17/21 (or 0.80952380952381 in its decimal form)