Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 36/80 and 21/4

1st number: 36/80, 2nd number: 5 1/4

36/80 + 21/4 is 57/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 4 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    36/80 = 36 × 1/80 × 1 = 36/80
  3. Likewise, for the 2nd fraction, since 4 × 20 = 80,
    21/4 = 21 × 20/4 × 20 = 420/80
  4. Add the two like fractions:
    36/80 + 420/80 = 36 + 420/80 = 456/80
  5. 456/80 simplified gives 57/10
  6. So, 36/80 + 21/4 = 57/10
    In mixed form: 57/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com