Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/14 and 15/60

1st number: 1 7/14, 2nd number: 15/60

21/14 + 15/60 is 7/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 60 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 14 × 30 = 420,
    21/14 = 21 × 30/14 × 30 = 630/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    15/60 = 15 × 7/60 × 7 = 105/420
  4. Add the two like fractions:
    630/420 + 105/420 = 630 + 105/420 = 735/420
  5. 735/420 simplified gives 7/4
  6. So, 21/14 + 15/60 = 7/4
    In mixed form: 13/4

MathStep (Works offline)

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

Related:

© everydaycalculation.com