Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Compare fractions

Compare 18/21 and 7/5

1st number: 18/21, 2nd number: 1 2/5

18/21 is smaller than 7/5

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 5 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    18/21 = 18 × 5/21 × 5 = 90/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    7/5 = 7 × 21/5 × 21 = 147/105
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 90/105 < 147/105 or 18/21 < 7/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com