Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 28/21 and 40/10

1st number: 1 7/21, 2nd number: 4 0/10

28/21 + 40/10 is 16/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    28/21 = 28 × 10/21 × 10 = 280/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    40/10 = 40 × 21/10 × 21 = 840/210
  4. Add the two like fractions:
    280/210 + 840/210 = 280 + 840/210 = 1120/210
  5. 1120/210 simplified gives 16/3
  6. So, 28/21 + 40/10 = 16/3
    In mixed form: 51/3

MathStep (Works offline)

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

Related:

© everydaycalculation.com