Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/20 and 15/42

1st number: 2 0/20, 2nd number: 15/42

40/20 + 15/42 is 33/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    40/20 = 40 × 21/20 × 21 = 840/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    15/42 = 15 × 10/42 × 10 = 150/420
  4. Add the two like fractions:
    840/420 + 150/420 = 840 + 150/420 = 990/420
  5. 990/420 simplified gives 33/14
  6. So, 40/20 + 15/42 = 33/14
    In mixed form: 25/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com