Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/40 and 8/70

21/40 + 8/70 is 179/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 70 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    21/40 = 21 × 7/40 × 7 = 147/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    8/70 = 8 × 4/70 × 4 = 32/280
  4. Add the two like fractions:
    147/280 + 32/280 = 147 + 32/280 = 179/280
  5. So, 21/40 + 8/70 = 179/280

MathStep (Works offline)

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

Related:

© everydaycalculation.com