Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 4/42 and 21/9

1st number: 4/42, 2nd number: 2 3/9

4/42 + 21/9 is 17/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 9 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    4/42 = 4 × 3/42 × 3 = 12/126
  3. Likewise, for the 2nd fraction, since 9 × 14 = 126,
    21/9 = 21 × 14/9 × 14 = 294/126
  4. Add the two like fractions:
    12/126 + 294/126 = 12 + 294/126 = 306/126
  5. 306/126 simplified gives 17/7
  6. So, 4/42 + 21/9 = 17/7
    In mixed form: 23/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com