Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 30/18 from 20/30

1st number: 20/30, 2nd number: 1 12/18

20/30 - 30/18 is -1/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 30 × 3 = 90,
    20/30 = 20 × 3/30 × 3 = 60/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    30/18 = 30 × 5/18 × 5 = 150/90
  4. Subtract the two like fractions:
    60/90 - 150/90 = 60 - 150/90 = -90/90
  5. After reducing the fraction, the answer is -1/1

MathStep (Works offline)

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

Related:

© everydaycalculation.com