What is 2/5 minus 9/10?

Looking for the result of 2/5 - 9/10? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 2/5 by 9/10?

2 5 − 9 10 = (2 × 10) − (9 × 5) 5 × 10 = -25 50 = -1 2
  1. Multiply the numerator of the first term, with the denominator of the second term: 2 × 10 = 20
  2. Multiply the numerator of the second term, with the denominator of the first term: 9 × 5 = 45
  3. Subtract both of these results together to form the new numerator: 20 − 45 = -25
  4. Multiply both denominators together to form the new denominator: 5 × 10 = 50
  5. Combine the results to get the new fraction: -25/50
  6. Simplify the fraction (-25/50) by dividing both the numerator and the denominator by their GCD (25):
    • -25/25 = -1
    • 50/25 = 2
  7. This gives: -1/2.

The result of subtracting 2/5 and 9/10 is : -1/2 (or -0.5 in its decimal form)