Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/18 and 48/21

1st number: 1 2/18, 2nd number: 2 6/21

20/18 + 48/21 is 214/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    20/18 = 20 × 7/18 × 7 = 140/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    48/21 = 48 × 6/21 × 6 = 288/126
  4. Add the two like fractions:
    140/126 + 288/126 = 140 + 288/126 = 428/126
  5. 428/126 simplified gives 214/63
  6. So, 20/18 + 48/21 = 214/63
    In mixed form: 325/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com