Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 12/18 from 7/20

7/20 - 12/18 is -19/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 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 18 × 10 = 180,
    12/18 = 12 × 10/18 × 10 = 120/180
  4. Subtract the two like fractions:
    63/180 - 120/180 = 63 - 120/180 = -57/180
  5. After reducing the fraction, the answer is -19/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com