Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/24 and 90/20

1st number: 21/24, 2nd number: 4 10/20

21/24 + 90/20 is 43/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 20 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 24 × 5 = 120,
    21/24 = 21 × 5/24 × 5 = 105/120
  3. Likewise, for the 2nd fraction, since 20 × 6 = 120,
    90/20 = 90 × 6/20 × 6 = 540/120
  4. Add the two like fractions:
    105/120 + 540/120 = 105 + 540/120 = 645/120
  5. 645/120 simplified gives 43/8
  6. So, 21/24 + 90/20 = 43/8
    In mixed form: 53/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com