Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/84 and 42/18

1st number: 20/84, 2nd number: 2 6/18

20/84 + 42/18 is 18/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 18 is 252
  2. For the 1st fraction, since 84 × 3 = 252,
    20/84 = 20 × 3/84 × 3 = 60/252
  3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
    42/18 = 42 × 14/18 × 14 = 588/252
  4. Add the two fractions:
    60/252 + 588/252 = 60 + 588/252 = 648/252
  5. 648/252 simplified gives 18/7
  6. So, 20/84 + 42/18 = 18/7
    In mixed form: 24/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com