Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 48/21 and 42/20

1st number: 2 6/21, 2nd number: 2 2/20

48/21 + 42/20 is 307/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420
  2. For the 1st fraction, since 21 × 20 = 420,
    48/21 = 48 × 20/21 × 20 = 960/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    42/20 = 42 × 21/20 × 21 = 882/420
  4. Add the two fractions:
    960/420 + 882/420 = 960 + 882/420 = 1842/420
  5. 1842/420 simplified gives 307/70
  6. So, 48/21 + 42/20 = 307/70
    In mixed form: 427/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com