Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 1/21 and 4/18

1/21 + 4/18 is 17/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 18 is 126
  2. For the 1st fraction, since 21 × 6 = 126,
    1/21 = 1 × 6/21 × 6 = 6/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    4/18 = 4 × 7/18 × 7 = 28/126
  4. Add the two fractions:
    6/126 + 28/126 = 6 + 28/126 = 34/126
  5. After reducing the fraction, the answer is 17/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com