Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 14/9 from 30/21

1st number: 1 9/21, 2nd number: 1 5/9

30/21 - 14/9 is -8/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 21 × 3 = 63,
    30/21 = 30 × 3/21 × 3 = 90/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    14/9 = 14 × 7/9 × 7 = 98/63
  4. Subtract the two like fractions:
    90/63 - 98/63 = 90 - 98/63 = -8/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com