Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/15 and 40/80

1st number: 1 3/15, 2nd number: 40/80

18/15 + 40/80 is 17/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    18/15 = 18 × 16/15 × 16 = 288/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    40/80 = 40 × 3/80 × 3 = 120/240
  4. Add the two like fractions:
    288/240 + 120/240 = 288 + 120/240 = 408/240
  5. 408/240 simplified gives 17/10
  6. So, 18/15 + 40/80 = 17/10
    In mixed form: 17/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com