Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 50/15 from 18/84

1st number: 18/84, 2nd number: 3 5/15

18/84 - 50/15 is -131/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 15 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    18/84 = 18 × 5/84 × 5 = 90/420
  3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
    50/15 = 50 × 28/15 × 28 = 1400/420
  4. Subtract the two like fractions:
    90/420 - 1400/420 = 90 - 1400/420 = -1310/420
  5. After reducing the fraction, the answer is -131/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com