What is 1/7 minus 2/8?

Looking for the result of 1/7 - 2/8? Follow this step-by-step guide to understand how to subtract these two fractions.

How to subtract 1/7 by 2/8?

1 7 − 2 8 = (1 × 8) − (2 × 7) 7 × 8 = -6 56 = -3 28
  1. Multiply the numerator of the first term, with the denominator of the second term: 1 × 8 = 8
  2. Multiply the numerator of the second term, with the denominator of the first term: 2 × 7 = 14
  3. Subtract both of these results together to form the new numerator: 8 − 14 = -6
  4. Multiply both denominators together to form the new denominator: 7 × 8 = 56
  5. Combine the results to get the new fraction: -6/56
  6. Simplify the fraction (-6/56) by dividing both the numerator and the denominator by their GCD (2):
    • -6/2 = -3
    • 56/2 = 28
  7. This gives: -3/28.

The result of subtracting 1/7 and 2/8 is : -3/28 (or -0.10714285714286 in its decimal form)