Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 10/63 from 10/90

10/90 - 10/63 is -1/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 63 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    10/90 = 10 × 7/90 × 7 = 70/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    10/63 = 10 × 10/63 × 10 = 100/630
  4. Subtract the two fractions:
    70/630 - 100/630 = 70 - 100/630 = -30/630
  5. After reducing the fraction, the answer is -1/21

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com