Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 32/42 and 18/72

32/42 + 18/72 is 85/84.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 42 × 12 = 504,
    32/42 = 32 × 12/42 × 12 = 384/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    18/72 = 18 × 7/72 × 7 = 126/504
  4. Add the two like fractions:
    384/504 + 126/504 = 384 + 126/504 = 510/504
  5. 510/504 simplified gives 85/84
  6. So, 32/42 + 18/72 = 85/84
    In mixed form: 11/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com