Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 54/15 and 21/16

1st number: 3 9/15, 2nd number: 1 5/16

54/15 + 21/16 is 393/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 16 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    54/15 = 54 × 16/15 × 16 = 864/240
  3. Likewise, for the 2nd fraction, since 16 × 15 = 240,
    21/16 = 21 × 15/16 × 15 = 315/240
  4. Add the two like fractions:
    864/240 + 315/240 = 864 + 315/240 = 1179/240
  5. 1179/240 simplified gives 393/80
  6. So, 54/15 + 21/16 = 393/80
    In mixed form: 473/80

MathStep (Works offline)

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

Related:

© everydaycalculation.com