Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 60/21 and 70/20

1st number: 2 18/21, 2nd number: 3 10/20

60/21 + 70/20 is 89/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    60/21 = 60 × 20/21 × 20 = 1200/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    70/20 = 70 × 21/20 × 21 = 1470/420
  4. Add the two like fractions:
    1200/420 + 1470/420 = 1200 + 1470/420 = 2670/420
  5. 2670/420 simplified gives 89/14
  6. So, 60/21 + 70/20 = 89/14
    In mixed form: 65/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com