Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 10/42 from 8/54

8/54 - 10/42 is -17/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 42 is 378
  2. For the 1st fraction, since 54 × 7 = 378,
    8/54 = 8 × 7/54 × 7 = 56/378
  3. Likewise, for the 2nd fraction, since 42 × 9 = 378,
    10/42 = 10 × 9/42 × 9 = 90/378
  4. Subtract the two fractions:
    56/378 - 90/378 = 56 - 90/378 = -34/378
  5. After reducing the fraction, the answer is -17/189

MathStep (Works offline)

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

Related:

© everydaycalculation.com