Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 12/18 from 45/15

1st number: 3 0/15, 2nd number: 12/18

45/15 - 12/18 is 7/3.

Steps for subtracting 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,
    12/18 = 12 × 5/18 × 5 = 60/90
  4. Subtract the two like fractions:
    270/90 - 60/90 = 270 - 60/90 = 210/90
  5. After reducing the fraction, the answer is 7/3
  6. In mixed form: 21/3

MathStep (Works offline)

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

Related:

© everydaycalculation.com