Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 36/72 and 15/21

36/72 + 15/21 is 17/14.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    36/72 = 36 × 7/72 × 7 = 252/504
  3. Likewise, for the 2nd fraction, since 21 × 24 = 504,
    15/21 = 15 × 24/21 × 24 = 360/504
  4. Add the two like fractions:
    252/504 + 360/504 = 252 + 360/504 = 612/504
  5. 612/504 simplified gives 17/14
  6. So, 36/72 + 15/21 = 17/14
    In mixed form: 13/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com