Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/15 and 40/42

1st number: 2 0/15, 2nd number: 40/42

30/15 + 40/42 is 62/21.

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,
    30/15 = 30 × 14/15 × 14 = 420/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    40/42 = 40 × 5/42 × 5 = 200/210
  4. Add the two like fractions:
    420/210 + 200/210 = 420 + 200/210 = 620/210
  5. 620/210 simplified gives 62/21
  6. So, 30/15 + 40/42 = 62/21
    In mixed form: 220/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com