Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/30 and 56/80

21/30 + 56/80 is 7/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 30 × 8 = 240,
    21/30 = 21 × 8/30 × 8 = 168/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    56/80 = 56 × 3/80 × 3 = 168/240
  4. Add the two like fractions:
    168/240 + 168/240 = 168 + 168/240 = 336/240
  5. 336/240 simplified gives 7/5
  6. So, 21/30 + 56/80 = 7/5
    In mixed form: 12/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com