Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/70 and 50/72

21/70 + 50/72 is 179/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 72 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 70 × 36 = 2520,
    21/70 = 21 × 36/70 × 36 = 756/2520
  3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
    50/72 = 50 × 35/72 × 35 = 1750/2520
  4. Add the two like fractions:
    756/2520 + 1750/2520 = 756 + 1750/2520 = 2506/2520
  5. 2506/2520 simplified gives 179/180
  6. So, 21/70 + 50/72 = 179/180

MathStep (Works offline)

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

Related:

© everydaycalculation.com