Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 1/4 and 7/21

1/4 + 7/21 is 7/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    1/4 = 1 × 21/4 × 21 = 21/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    7/21 = 7 × 4/21 × 4 = 28/84
  4. Add the two like fractions:
    21/84 + 28/84 = 21 + 28/84 = 49/84
  5. 49/84 simplified gives 7/12
  6. So, 1/4 + 7/21 = 7/12

MathStep (Works offline)

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

Related:

© everydaycalculation.com