Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/15 and 2/42

1st number: 1 6/15, 2nd number: 2/42

21/15 + 2/42 is 152/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 15 × 14 = 210,
    21/15 = 21 × 14/15 × 14 = 294/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    2/42 = 2 × 5/42 × 5 = 10/210
  4. Add the two like fractions:
    294/210 + 10/210 = 294 + 10/210 = 304/210
  5. 304/210 simplified gives 152/105
  6. So, 21/15 + 2/42 = 152/105
    In mixed form: 147/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com