Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 70/54 from 20/75

1st number: 20/75, 2nd number: 1 16/54

20/75 - 70/54 is -139/135.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 54 is 1350
  2. For the 1st fraction, since 75 × 18 = 1350,
    20/75 = 20 × 18/75 × 18 = 360/1350
  3. Likewise, for the 2nd fraction, since 54 × 25 = 1350,
    70/54 = 70 × 25/54 × 25 = 1750/1350
  4. Subtract the two fractions:
    360/1350 - 1750/1350 = 360 - 1750/1350 = -1390/1350
  5. After reducing the fraction, the answer is -139/135

MathStep (Works offline)

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

Related:

© everydaycalculation.com