Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/20 and 20/36

1st number: 1 1/20, 2nd number: 20/36

21/20 + 20/36 is 289/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 36 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    21/20 = 21 × 9/20 × 9 = 189/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    20/36 = 20 × 5/36 × 5 = 100/180
  4. Add the two like fractions:
    189/180 + 100/180 = 189 + 100/180 = 289/180
  5. So, 21/20 + 20/36 = 289/180
    In mixed form: 1109/180

MathStep (Works offline)

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

Related:

© everydaycalculation.com