Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 2/63 from 21/18

1st number: 1 3/18, 2nd number: 2/63

21/18 - 2/63 is 143/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 63 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    21/18 = 21 × 7/18 × 7 = 147/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    2/63 = 2 × 2/63 × 2 = 4/126
  4. Subtract the two like fractions:
    147/126 - 4/126 = 147 - 4/126 = 143/126
  5. In mixed form: 117/126

MathStep (Works offline)

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

Related:

© everydaycalculation.com