Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/75 and 20/80

21/75 + 20/80 is 53/100.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 80 is 1200

    Next, find the equivalent fraction of both fractional numbers with denominator 1200
  2. For the 1st fraction, since 75 × 16 = 1200,
    21/75 = 21 × 16/75 × 16 = 336/1200
  3. Likewise, for the 2nd fraction, since 80 × 15 = 1200,
    20/80 = 20 × 15/80 × 15 = 300/1200
  4. Add the two like fractions:
    336/1200 + 300/1200 = 336 + 300/1200 = 636/1200
  5. 636/1200 simplified gives 53/100
  6. So, 21/75 + 20/80 = 53/100

MathStep (Works offline)

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

Related:

© everydaycalculation.com