Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/12 and 4/90

1st number: 1 6/12, 2nd number: 4/90

18/12 + 4/90 is 139/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 12 × 15 = 180,
    18/12 = 18 × 15/12 × 15 = 270/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    4/90 = 4 × 2/90 × 2 = 8/180
  4. Add the two like fractions:
    270/180 + 8/180 = 270 + 8/180 = 278/180
  5. 278/180 simplified gives 139/90
  6. So, 18/12 + 4/90 = 139/90
    In mixed form: 149/90

MathStep (Works offline)

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

Related:

© everydaycalculation.com