Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/15 and 8/72

1st number: 1 6/15, 2nd number: 8/72

21/15 + 8/72 is 68/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 15 × 24 = 360,
    21/15 = 21 × 24/15 × 24 = 504/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    8/72 = 8 × 5/72 × 5 = 40/360
  4. Add the two like fractions:
    504/360 + 40/360 = 504 + 40/360 = 544/360
  5. 544/360 simplified gives 68/45
  6. So, 21/15 + 8/72 = 68/45
    In mixed form: 123/45

MathStep (Works offline)

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

Related:

© everydaycalculation.com