Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 28/90 and 21/27

28/90 + 21/27 is 49/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 27 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 90 × 3 = 270,
    28/90 = 28 × 3/90 × 3 = 84/270
  3. Likewise, for the 2nd fraction, since 27 × 10 = 270,
    21/27 = 21 × 10/27 × 10 = 210/270
  4. Add the two like fractions:
    84/270 + 210/270 = 84 + 210/270 = 294/270
  5. 294/270 simplified gives 49/45
  6. So, 28/90 + 21/27 = 49/45
    In mixed form: 14/45

MathStep (Works offline)

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

Related:

© everydaycalculation.com