Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 12/40 from 4/30

4/30 - 12/40 is -1/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 40 is 120
  2. For the 1st fraction, since 30 × 4 = 120,
    4/30 = 4 × 4/30 × 4 = 16/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    12/40 = 12 × 3/40 × 3 = 36/120
  4. Subtract the two fractions:
    16/120 - 36/120 = 16 - 36/120 = -20/120
  5. After reducing the fraction, the answer is -1/6

MathStep (Works offline)

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

Related:

© everydaycalculation.com