Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/21 and 4/18

20/21 + 4/18 is 74/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 21 × 6 = 126,
    20/21 = 20 × 6/21 × 6 = 120/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    4/18 = 4 × 7/18 × 7 = 28/126
  4. Add the two like fractions:
    120/126 + 28/126 = 120 + 28/126 = 148/126
  5. 148/126 simplified gives 74/63
  6. So, 20/21 + 4/18 = 74/63
    In mixed form: 111/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com