Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Compare fractions

Compare 54/21 and 45/72

1st number: 2 12/21, 2nd number: 45/72

54/21 is greater than 45/72

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 21 × 24 = 504,
    54/21 = 54 × 24/21 × 24 = 1296/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    45/72 = 45 × 7/72 × 7 = 315/504
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1296/504 > 315/504 or 54/21 > 45/72

MathStep (Works offline)

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

Related:

© everydaycalculation.com