Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 18/40 from 70/20

1st number: 3 10/20, 2nd number: 18/40

70/20 - 18/40 is 61/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 20 × 2 = 40,
    70/20 = 70 × 2/20 × 2 = 140/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    18/40 = 18 × 1/40 × 1 = 18/40
  4. Subtract the two like fractions:
    140/40 - 18/40 = 140 - 18/40 = 122/40
  5. After reducing the fraction, the answer is 61/20
  6. In mixed form: 31/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com