What is 3/10 minus 9/8?

Looking for the result of 3/10 - 9/8? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 3/10 by 9/8?

3 10 − 9 8 = (3 × 8) − (9 × 10) 10 × 8 = -66 80 = -33 40
  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: 9 × 10 = 90
  3. Subtract both of these results together to form the new numerator: 24 − 90 = -66
  4. Multiply both denominators together to form the new denominator: 10 × 8 = 80
  5. Combine the results to get the new fraction: -66/80
  6. Simplify the fraction (-66/80) by dividing both the numerator and the denominator by their GCD (2):
    • -66/2 = -33
    • 80/2 = 40
  7. This gives: -33/40.

The result of subtracting 3/10 and 9/8 is : -33/40 (or -0.825 in its decimal form)