Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 15/9 from 7/20

1st number: 7/20, 2nd number: 1 6/9

7/20 - 15/9 is -79/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    7/20 = 7 × 9/20 × 9 = 63/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    15/9 = 15 × 20/9 × 20 = 300/180
  4. Subtract the two like fractions:
    63/180 - 300/180 = 63 - 300/180 = -237/180
  5. After reducing the fraction, the answer is -79/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com