Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/42 and 4/8

1st number: 1 30/42, 2nd number: 4/8

72/42 + 4/8 is 31/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    72/42 = 72 × 4/42 × 4 = 288/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    4/8 = 4 × 21/8 × 21 = 84/168
  4. Add the two like fractions:
    288/168 + 84/168 = 288 + 84/168 = 372/168
  5. 372/168 simplified gives 31/14
  6. So, 72/42 + 4/8 = 31/14
    In mixed form: 23/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com