Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 81/20 and 6/7

1st number: 4 1/20, 2nd number: 6/7

81/20 + 6/7 is 687/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    81/20 = 81 × 7/20 × 7 = 567/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    6/7 = 6 × 20/7 × 20 = 120/140
  4. Add the two like fractions:
    567/140 + 120/140 = 567 + 120/140 = 687/140
  5. So, 81/20 + 6/7 = 687/140
    In mixed form: 4127/140

MathStep (Works offline)

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

Related:

© everydaycalculation.com