Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 21/6 from 2/5

1st number: 2/5, 2nd number: 3 3/6

2/5 - 21/6 is -31/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 6 is 30
  2. For the 1st fraction, since 5 × 6 = 30,
    2/5 = 2 × 6/5 × 6 = 12/30
  3. Likewise, for the 2nd fraction, since 6 × 5 = 30,
    21/6 = 21 × 5/6 × 5 = 105/30
  4. Subtract the two fractions:
    12/30 - 105/30 = 12 - 105/30 = -93/30
  5. After reducing the fraction, the answer is -31/10

Related:

© everydaycalculation.com