Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/21 and 20/54

1st number: 1 19/21, 2nd number: 20/54

40/21 + 20/54 is 430/189.

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,
    40/21 = 40 × 18/21 × 18 = 720/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    20/54 = 20 × 7/54 × 7 = 140/378
  4. Add the two fractions:
    720/378 + 140/378 = 720 + 140/378 = 860/378
  5. 860/378 simplified gives 430/189
  6. So, 40/21 + 20/54 = 430/189
    In mixed form: 252/189

MathStep (Works offline)

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

Related:

© everydaycalculation.com