Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 72/40 from 20/6

1st number: 3 2/6, 2nd number: 1 32/40

20/6 - 72/40 is 23/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 6 × 20 = 120,
    20/6 = 20 × 20/6 × 20 = 400/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    72/40 = 72 × 3/40 × 3 = 216/120
  4. Subtract the two like fractions:
    400/120 - 216/120 = 400 - 216/120 = 184/120
  5. After reducing the fraction, the answer is 23/15
  6. In mixed form: 18/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com