Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 84/63 from 8/30

1st number: 8/30, 2nd number: 1 21/63

8/30 - 84/63 is -16/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 63 is 630
  2. For the 1st fraction, since 30 × 21 = 630,
    8/30 = 8 × 21/30 × 21 = 168/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    84/63 = 84 × 10/63 × 10 = 840/630
  4. Subtract the two fractions:
    168/630 - 840/630 = 168 - 840/630 = -672/630
  5. After reducing the fraction, the answer is -16/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com