Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 18/7 from 81/16

1st number: 5 1/16, 2nd number: 2 4/7

81/16 - 18/7 is 279/112.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 7 is 112
  2. For the 1st fraction, since 16 × 7 = 112,
    81/16 = 81 × 7/16 × 7 = 567/112
  3. Likewise, for the 2nd fraction, since 7 × 16 = 112,
    18/7 = 18 × 16/7 × 16 = 288/112
  4. Subtract the two fractions:
    567/112 - 288/112 = 567 - 288/112 = 279/112
  5. In mixed form: 255/112

MathStep (Works offline)

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

Related:

© everydaycalculation.com