Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 30/12 from 30/15

1st number: 2 0/15, 2nd number: 2 6/12

30/15 - 30/12 is -1/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 12 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    30/15 = 30 × 4/15 × 4 = 120/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    30/12 = 30 × 5/12 × 5 = 150/60
  4. Subtract the two fractions:
    120/60 - 150/60 = 120 - 150/60 = -30/60
  5. After reducing the fraction, the answer is -1/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com