Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 7/45 from 1/20

1/20 - 7/45 is -19/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 45 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    1/20 = 1 × 9/20 × 9 = 9/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    7/45 = 7 × 4/45 × 4 = 28/180
  4. Subtract the two like fractions:
    9/180 - 28/180 = 9 - 28/180 = -19/180

MathStep (Works offline)

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

Related:

© everydaycalculation.com