Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 21/42 from 40/2

1st number: 20 0/2, 2nd number: 21/42

40/2 - 21/42 is 39/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 42 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 2 × 21 = 42,
    40/2 = 40 × 21/2 × 21 = 840/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    21/42 = 21 × 1/42 × 1 = 21/42
  4. Subtract the two like fractions:
    840/42 - 21/42 = 840 - 21/42 = 819/42
  5. After reducing the fraction, the answer is 39/2
  6. In mixed form: 191/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com