Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 63/90 and 7/20

63/90 + 7/20 is 21/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    63/90 = 63 × 2/90 × 2 = 126/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    7/20 = 7 × 9/20 × 9 = 63/180
  4. Add the two like fractions:
    126/180 + 63/180 = 126 + 63/180 = 189/180
  5. 189/180 simplified gives 21/20
  6. So, 63/90 + 7/20 = 21/20
    In mixed form: 11/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com