Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 63/42 from 54/40

1st number: 1 14/40, 2nd number: 1 21/42

54/40 - 63/42 is -3/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 42 is 840
  2. For the 1st fraction, since 40 × 21 = 840,
    54/40 = 54 × 21/40 × 21 = 1134/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    63/42 = 63 × 20/42 × 20 = 1260/840
  4. Subtract the two fractions:
    1134/840 - 1260/840 = 1134 - 1260/840 = -126/840
  5. After reducing the fraction, the answer is -3/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com