Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/70 and 14/21

1st number: 1 2/70, 2nd number: 14/21

72/70 + 14/21 is 178/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 21 is 210
  2. For the 1st fraction, since 70 × 3 = 210,
    72/70 = 72 × 3/70 × 3 = 216/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    14/21 = 14 × 10/21 × 10 = 140/210
  4. Add the two fractions:
    216/210 + 140/210 = 216 + 140/210 = 356/210
  5. 356/210 simplified gives 178/105
  6. So, 72/70 + 14/21 = 178/105
    In mixed form: 173/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com