Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/28 and 9/42

1st number: 1 2/28, 2nd number: 9/42

30/28 + 9/42 is 9/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 42 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 28 × 3 = 84,
    30/28 = 30 × 3/28 × 3 = 90/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    9/42 = 9 × 2/42 × 2 = 18/84
  4. Add the two like fractions:
    90/84 + 18/84 = 90 + 18/84 = 108/84
  5. 108/84 simplified gives 9/7
  6. So, 30/28 + 9/42 = 9/7
    In mixed form: 12/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com