Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 30/21 and 20/36

1st number: 1 9/21, 2nd number: 20/36

30/21 + 20/36 is 125/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 36 is 252
  2. For the 1st fraction, since 21 × 12 = 252,
    30/21 = 30 × 12/21 × 12 = 360/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    20/36 = 20 × 7/36 × 7 = 140/252
  4. Add the two fractions:
    360/252 + 140/252 = 360 + 140/252 = 500/252
  5. After reducing the fraction, the answer is 125/63
  6. In mixed form: 162/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com