Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/4 and 20/42

1st number: 3 0/4, 2nd number: 20/42

12/4 + 20/42 is 73/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 42 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    12/4 = 12 × 21/4 × 21 = 252/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    20/42 = 20 × 2/42 × 2 = 40/84
  4. Add the two like fractions:
    252/84 + 40/84 = 252 + 40/84 = 292/84
  5. 292/84 simplified gives 73/21
  6. So, 12/4 + 20/42 = 73/21
    In mixed form: 310/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com