Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 9/40 from 30/12

1st number: 2 6/12, 2nd number: 9/40

30/12 - 9/40 is 91/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120
  2. For the 1st fraction, since 12 × 10 = 120,
    30/12 = 30 × 10/12 × 10 = 300/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    9/40 = 9 × 3/40 × 3 = 27/120
  4. Subtract the two fractions:
    300/120 - 27/120 = 300 - 27/120 = 273/120
  5. After reducing the fraction, the answer is 91/40
  6. In mixed form: 211/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com