Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/15 and 20/27

1st number: 1 6/15, 2nd number: 20/27

21/15 + 20/27 is 289/135.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 27 is 135

    Next, find the equivalent fraction of both fractional numbers with denominator 135
  2. For the 1st fraction, since 15 × 9 = 135,
    21/15 = 21 × 9/15 × 9 = 189/135
  3. Likewise, for the 2nd fraction, since 27 × 5 = 135,
    20/27 = 20 × 5/27 × 5 = 100/135
  4. Add the two like fractions:
    189/135 + 100/135 = 189 + 100/135 = 289/135
  5. So, 21/15 + 20/27 = 289/135
    In mixed form: 219/135

MathStep (Works offline)

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

Related:

© everydaycalculation.com