Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/72 and 81/80

1st number: 30/72, 2nd number: 1 1/80

30/72 + 81/80 is 343/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 80 is 720
  2. For the 1st fraction, since 72 × 10 = 720,
    30/72 = 30 × 10/72 × 10 = 300/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    81/80 = 81 × 9/80 × 9 = 729/720
  4. Add the two fractions:
    300/720 + 729/720 = 300 + 729/720 = 1029/720
  5. 1029/720 simplified gives 343/240
  6. So, 30/72 + 81/80 = 343/240
    In mixed form: 1103/240

MathStep (Works offline)

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

Related:

© everydaycalculation.com