Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 84/56 and 20/90

1st number: 1 28/56, 2nd number: 20/90

84/56 + 20/90 is 31/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 90 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 56 × 45 = 2520,
    84/56 = 84 × 45/56 × 45 = 3780/2520
  3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
    20/90 = 20 × 28/90 × 28 = 560/2520
  4. Add the two like fractions:
    3780/2520 + 560/2520 = 3780 + 560/2520 = 4340/2520
  5. 4340/2520 simplified gives 31/18
  6. So, 84/56 + 20/90 = 31/18
    In mixed form: 113/18

MathStep (Works offline)

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

Related:

© everydaycalculation.com