Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/12 and 15/40

1st number: 1 6/12, 2nd number: 15/40

18/12 + 15/40 is 15/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 12 × 10 = 120,
    18/12 = 18 × 10/12 × 10 = 180/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    15/40 = 15 × 3/40 × 3 = 45/120
  4. Add the two like fractions:
    180/120 + 45/120 = 180 + 45/120 = 225/120
  5. 225/120 simplified gives 15/8
  6. So, 18/12 + 15/40 = 15/8
    In mixed form: 17/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com