What is 1/8 minus 9/4?

Looking for the result of 1/8 - 9/4? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 1/8 by 9/4?

1 8 − 9 4 = (1 × 4) − (9 × 8) 8 × 4 = -68 32 = -17 8
  1. Multiply the numerator of the first term, with the denominator of the second term: 1 × 4 = 4
  2. Multiply the numerator of the second term, with the denominator of the first term: 9 × 8 = 72
  3. Subtract both of these results together to form the new numerator: 4 − 72 = -68
  4. Multiply both denominators together to form the new denominator: 8 × 4 = 32
  5. Combine the results to get the new fraction: -68/32
  6. Simplify the fraction (-68/32) by dividing both the numerator and the denominator by their GCD (4):
    • -68/4 = -17
    • 32/4 = 8
  7. This gives: -17/8.

The result of subtracting 1/8 and 9/4 is : -17/8 (or -2.125 in its decimal form)