Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 70/12 and 50/21

1st number: 5 10/12, 2nd number: 2 8/21

70/12 + 50/21 is 115/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    70/12 = 70 × 7/12 × 7 = 490/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    50/21 = 50 × 4/21 × 4 = 200/84
  4. Add the two fractions:
    490/84 + 200/84 = 490 + 200/84 = 690/84
  5. After reducing the fraction, the answer is 115/14
  6. In mixed form: 83/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com