Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 45/15 and 80/18

1st number: 3 0/15, 2nd number: 4 8/18

45/15 + 80/18 is 67/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 15 × 6 = 90,
    45/15 = 45 × 6/15 × 6 = 270/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    80/18 = 80 × 5/18 × 5 = 400/90
  4. Add the two like fractions:
    270/90 + 400/90 = 270 + 400/90 = 670/90
  5. 670/90 simplified gives 67/9
  6. So, 45/15 + 80/18 = 67/9
    In mixed form: 74/9

MathStep (Works offline)

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

Related:

© everydaycalculation.com