Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/72 and 18/42

15/72 + 18/42 is 107/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 42 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    15/72 = 15 × 7/72 × 7 = 105/504
  3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
    18/42 = 18 × 12/42 × 12 = 216/504
  4. Add the two like fractions:
    105/504 + 216/504 = 105 + 216/504 = 321/504
  5. 321/504 simplified gives 107/168
  6. So, 15/72 + 18/42 = 107/168

MathStep (Works offline)

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

Related:

© everydaycalculation.com