Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 21/60 from 90/18

1st number: 5 0/18, 2nd number: 21/60

90/18 - 21/60 is 93/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 60 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    90/18 = 90 × 10/18 × 10 = 900/180
  3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
    21/60 = 21 × 3/60 × 3 = 63/180
  4. Subtract the two like fractions:
    900/180 - 63/180 = 900 - 63/180 = 837/180
  5. After reducing the fraction, the answer is 93/20
  6. In mixed form: 413/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com