Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/35 and 3/8

21/35 + 3/8 is 39/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 8 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 35 × 8 = 280,
    21/35 = 21 × 8/35 × 8 = 168/280
  3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
    3/8 = 3 × 35/8 × 35 = 105/280
  4. Add the two like fractions:
    168/280 + 105/280 = 168 + 105/280 = 273/280
  5. 273/280 simplified gives 39/40
  6. So, 21/35 + 3/8 = 39/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com