Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/16 and 72/90

1st number: 1 2/16, 2nd number: 72/90

18/16 + 72/90 is 77/40.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 16 × 45 = 720,
    18/16 = 18 × 45/16 × 45 = 810/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    72/90 = 72 × 8/90 × 8 = 576/720
  4. Add the two like fractions:
    810/720 + 576/720 = 810 + 576/720 = 1386/720
  5. 1386/720 simplified gives 77/40
  6. So, 18/16 + 72/90 = 77/40
    In mixed form: 137/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com