Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 84/90 and 12/80

84/90 + 12/80 is 13/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    84/90 = 84 × 8/90 × 8 = 672/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    12/80 = 12 × 9/80 × 9 = 108/720
  4. Add the two like fractions:
    672/720 + 108/720 = 672 + 108/720 = 780/720
  5. 780/720 simplified gives 13/12
  6. So, 84/90 + 12/80 = 13/12
    In mixed form: 11/12

MathStep (Works offline)

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

Related:

© everydaycalculation.com