Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 6/21 and 12/18

6/21 + 12/18 is 20/21.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 21 × 6 = 126,
    6/21 = 6 × 6/21 × 6 = 36/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    12/18 = 12 × 7/18 × 7 = 84/126
  4. Add the two like fractions:
    36/126 + 84/126 = 36 + 84/126 = 120/126
  5. 120/126 simplified gives 20/21
  6. So, 6/21 + 12/18 = 20/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com