Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/20 and 42/35

1st number: 12/20, 2nd number: 1 7/35

12/20 + 42/35 is 9/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 35 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    12/20 = 12 × 7/20 × 7 = 84/140
  3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
    42/35 = 42 × 4/35 × 4 = 168/140
  4. Add the two like fractions:
    84/140 + 168/140 = 84 + 168/140 = 252/140
  5. 252/140 simplified gives 9/5
  6. So, 12/20 + 42/35 = 9/5
    In mixed form: 14/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com