Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 84/18 and 2/21

1st number: 4 12/18, 2nd number: 2/21

84/18 + 2/21 is 100/21.

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,
    84/18 = 84 × 7/18 × 7 = 588/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    2/21 = 2 × 6/21 × 6 = 12/126
  4. Add the two like fractions:
    588/126 + 12/126 = 588 + 12/126 = 600/126
  5. 600/126 simplified gives 100/21
  6. So, 84/18 + 2/21 = 100/21
    In mixed form: 416/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com