Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 42/90 from 45/75

45/75 - 42/90 is 2/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 90 is 450
  2. For the 1st fraction, since 75 × 6 = 450,
    45/75 = 45 × 6/75 × 6 = 270/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    42/90 = 42 × 5/90 × 5 = 210/450
  4. Subtract the two fractions:
    270/450 - 210/450 = 270 - 210/450 = 60/450
  5. After reducing the fraction, the answer is 2/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com