Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/5 and 21/9

1st number: 14 2/5, 2nd number: 2 3/9

72/5 + 21/9 is 251/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 9 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 5 × 9 = 45,
    72/5 = 72 × 9/5 × 9 = 648/45
  3. Likewise, for the 2nd fraction, since 9 × 5 = 45,
    21/9 = 21 × 5/9 × 5 = 105/45
  4. Add the two like fractions:
    648/45 + 105/45 = 648 + 105/45 = 753/45
  5. 753/45 simplified gives 251/15
  6. So, 72/5 + 21/9 = 251/15
    In mixed form: 1611/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com