Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/15 and 15/8

1st number: 12/15, 2nd number: 1 7/8

12/15 + 15/8 is 107/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 8 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 15 × 8 = 120,
    12/15 = 12 × 8/15 × 8 = 96/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    15/8 = 15 × 15/8 × 15 = 225/120
  4. Add the two like fractions:
    96/120 + 225/120 = 96 + 225/120 = 321/120
  5. 321/120 simplified gives 107/40
  6. So, 12/15 + 15/8 = 107/40
    In mixed form: 227/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com