Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 48/20 from 12/90

1st number: 12/90, 2nd number: 2 8/20

12/90 - 48/20 is -34/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 90 × 2 = 180,
    12/90 = 12 × 2/90 × 2 = 24/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    48/20 = 48 × 9/20 × 9 = 432/180
  4. Subtract the two like fractions:
    24/180 - 432/180 = 24 - 432/180 = -408/180
  5. After reducing the fraction, the answer is -34/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com