Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 60/84 from 20/45

20/45 - 60/84 is -17/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 84 is 1260
  2. For the 1st fraction, since 45 × 28 = 1260,
    20/45 = 20 × 28/45 × 28 = 560/1260
  3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
    60/84 = 60 × 15/84 × 15 = 900/1260
  4. Subtract the two fractions:
    560/1260 - 900/1260 = 560 - 900/1260 = -340/1260
  5. After reducing the fraction, the answer is -17/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com