Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 10/21 and 20/54

10/21 + 20/54 is 160/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 54 is 378
  2. For the 1st fraction, since 21 × 18 = 378,
    10/21 = 10 × 18/21 × 18 = 180/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    20/54 = 20 × 7/54 × 7 = 140/378
  4. Add the two fractions:
    180/378 + 140/378 = 180 + 140/378 = 320/378
  5. After reducing the fraction, the answer is 160/189

MathStep (Works offline)

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

Related:

© everydaycalculation.com