Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/8 and 27/90

1st number: 2 2/8, 2nd number: 27/90

18/8 + 27/90 is 51/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 8 × 45 = 360,
    18/8 = 18 × 45/8 × 45 = 810/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    27/90 = 27 × 4/90 × 4 = 108/360
  4. Add the two like fractions:
    810/360 + 108/360 = 810 + 108/360 = 918/360
  5. 918/360 simplified gives 51/20
  6. So, 18/8 + 27/90 = 51/20
    In mixed form: 211/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com