Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 90/84 and 54/56

1st number: 1 6/84, 2nd number: 54/56

90/84 + 54/56 is 57/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 56 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 84 × 2 = 168,
    90/84 = 90 × 2/84 × 2 = 180/168
  3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
    54/56 = 54 × 3/56 × 3 = 162/168
  4. Add the two like fractions:
    180/168 + 162/168 = 180 + 162/168 = 342/168
  5. 342/168 simplified gives 57/28
  6. So, 90/84 + 54/56 = 57/28
    In mixed form: 21/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com