Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 21/40 from 98/84

1st number: 1 14/84, 2nd number: 21/40

98/84 - 21/40 is 77/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 40 is 840
  2. For the 1st fraction, since 84 × 10 = 840,
    98/84 = 98 × 10/84 × 10 = 980/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    21/40 = 21 × 21/40 × 21 = 441/840
  4. Subtract the two fractions:
    980/840 - 441/840 = 980 - 441/840 = 539/840
  5. After reducing the fraction, the answer is 77/120

MathStep (Works offline)

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

Related:

© everydaycalculation.com