Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/2 and 28/4

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

21/2 + 28/4 is 35/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 4 is 4

    Next, find the equivalent fraction of both fractional numbers with denominator 4
  2. For the 1st fraction, since 2 × 2 = 4,
    21/2 = 21 × 2/2 × 2 = 42/4
  3. Likewise, for the 2nd fraction, since 4 × 1 = 4,
    28/4 = 28 × 1/4 × 1 = 28/4
  4. Add the two like fractions:
    42/4 + 28/4 = 42 + 28/4 = 70/4
  5. 70/4 simplified gives 35/2
  6. So, 21/2 + 28/4 = 35/2
    In mixed form: 171/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com