Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 42/90 from 63/40

1st number: 1 23/40, 2nd number: 42/90

63/40 - 42/90 is 133/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 90 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    63/40 = 63 × 9/40 × 9 = 567/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    42/90 = 42 × 4/90 × 4 = 168/360
  4. Subtract the two fractions:
    567/360 - 168/360 = 567 - 168/360 = 399/360
  5. After reducing the fraction, the answer is 133/120
  6. In mixed form: 113/120

MathStep (Works offline)

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

Related:

© everydaycalculation.com