Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/36 and 12/70

21/36 + 12/70 is 317/420.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 70 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 36 × 35 = 1260,
    21/36 = 21 × 35/36 × 35 = 735/1260
  3. Likewise, for the 2nd fraction, since 70 × 18 = 1260,
    12/70 = 12 × 18/70 × 18 = 216/1260
  4. Add the two like fractions:
    735/1260 + 216/1260 = 735 + 216/1260 = 951/1260
  5. 951/1260 simplified gives 317/420
  6. So, 21/36 + 12/70 = 317/420

MathStep (Works offline)

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

Related:

© everydaycalculation.com