Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/25 and 20/40

21/25 + 20/40 is 67/50.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 40 is 200

    Next, find the equivalent fraction of both fractional numbers with denominator 200
  2. For the 1st fraction, since 25 × 8 = 200,
    21/25 = 21 × 8/25 × 8 = 168/200
  3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
    20/40 = 20 × 5/40 × 5 = 100/200
  4. Add the two like fractions:
    168/200 + 100/200 = 168 + 100/200 = 268/200
  5. 268/200 simplified gives 67/50
  6. So, 21/25 + 20/40 = 67/50
    In mixed form: 117/50

MathStep (Works offline)

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

Related:

© everydaycalculation.com