Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/12 and 75/20

1st number: 1 6/12, 2nd number: 3 15/20

18/12 + 75/20 is 21/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 20 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    18/12 = 18 × 5/12 × 5 = 90/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    75/20 = 75 × 3/20 × 3 = 225/60
  4. Add the two like fractions:
    90/60 + 225/60 = 90 + 225/60 = 315/60
  5. 315/60 simplified gives 21/4
  6. So, 18/12 + 75/20 = 21/4
    In mixed form: 51/4

MathStep (Works offline)

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

Related:

© everydaycalculation.com