Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/90 and 4/16

72/90 + 4/16 is 21/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 16 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    72/90 = 72 × 8/90 × 8 = 576/720
  3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
    4/16 = 4 × 45/16 × 45 = 180/720
  4. Add the two like fractions:
    576/720 + 180/720 = 576 + 180/720 = 756/720
  5. 756/720 simplified gives 21/20
  6. So, 72/90 + 4/16 = 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