Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/3 and 16/18

1st number: 7 0/3, 2nd number: 16/18

21/3 + 16/18 is 71/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 18 is 18

    Next, find the equivalent fraction of both fractional numbers with denominator 18
  2. For the 1st fraction, since 3 × 6 = 18,
    21/3 = 21 × 6/3 × 6 = 126/18
  3. Likewise, for the 2nd fraction, since 18 × 1 = 18,
    16/18 = 16 × 1/18 × 1 = 16/18
  4. Add the two like fractions:
    126/18 + 16/18 = 126 + 16/18 = 142/18
  5. 142/18 simplified gives 71/9
  6. So, 21/3 + 16/18 = 71/9
    In mixed form: 78/9

MathStep (Works offline)

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

Related:

© everydaycalculation.com