What is 3/9 minus 7/8?

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

How to subtract 3/9 by 7/8?

3 9 − 7 8 = (3 × 8) − (7 × 9) 9 × 8 = -39 72 = -13 24
  1. Multiply the numerator of the first term, with the denominator of the second term: 3 × 8 = 24
  2. Multiply the numerator of the second term, with the denominator of the first term: 7 × 9 = 63
  3. Subtract both of these results together to form the new numerator: 24 − 63 = -39
  4. Multiply both denominators together to form the new denominator: 9 × 8 = 72
  5. Combine the results to get the new fraction: -39/72
  6. Simplify the fraction (-39/72) by dividing both the numerator and the denominator by their GCD (3):
    • -39/3 = -13
    • 72/3 = 24
  7. This gives: -13/24.

The result of subtracting 3/9 and 7/8 is : -13/24 (or -0.54166666666667 in its decimal form)