Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/18 and 42/5

1st number: 4 0/18, 2nd number: 8 2/5

72/18 + 42/5 is 62/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 5 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    72/18 = 72 × 5/18 × 5 = 360/90
  3. Likewise, for the 2nd fraction, since 5 × 18 = 90,
    42/5 = 42 × 18/5 × 18 = 756/90
  4. Add the two like fractions:
    360/90 + 756/90 = 360 + 756/90 = 1116/90
  5. 1116/90 simplified gives 62/5
  6. So, 72/18 + 42/5 = 62/5
    In mixed form: 122/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com