Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/49 and 81/72

1st number: 20/49, 2nd number: 1 9/72

20/49 + 81/72 is 601/392.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 72 is 3528

    Next, find the equivalent fraction of both fractional numbers with denominator 3528
  2. For the 1st fraction, since 49 × 72 = 3528,
    20/49 = 20 × 72/49 × 72 = 1440/3528
  3. Likewise, for the 2nd fraction, since 72 × 49 = 3528,
    81/72 = 81 × 49/72 × 49 = 3969/3528
  4. Add the two like fractions:
    1440/3528 + 3969/3528 = 1440 + 3969/3528 = 5409/3528
  5. 5409/3528 simplified gives 601/392
  6. So, 20/49 + 81/72 = 601/392
    In mixed form: 1209/392

MathStep (Works offline)

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

Related:

© everydaycalculation.com