Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 1/54 from 15/42

15/42 - 1/54 is 64/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378
  2. For the 1st fraction, since 42 × 9 = 378,
    15/42 = 15 × 9/42 × 9 = 135/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    1/54 = 1 × 7/54 × 7 = 7/378
  4. Subtract the two fractions:
    135/378 - 7/378 = 135 - 7/378 = 128/378
  5. After reducing the fraction, the answer is 64/189

MathStep (Works offline)

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

Related:

© everydaycalculation.com