Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 7/40 from 27/18

1st number: 1 9/18, 2nd number: 7/40

27/18 - 7/40 is 53/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 18 × 20 = 360,
    27/18 = 27 × 20/18 × 20 = 540/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    7/40 = 7 × 9/40 × 9 = 63/360
  4. Subtract the two like fractions:
    540/360 - 63/360 = 540 - 63/360 = 477/360
  5. After reducing the fraction, the answer is 53/40
  6. In mixed form: 113/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com