Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 30/80 from 3/18

3/18 - 30/80 is -5/24.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 18 × 40 = 720,
    3/18 = 3 × 40/18 × 40 = 120/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    30/80 = 30 × 9/80 × 9 = 270/720
  4. Subtract the two like fractions:
    120/720 - 270/720 = 120 - 270/720 = -150/720
  5. After reducing the fraction, the answer is -5/24

MathStep (Works offline)

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

Related:

© everydaycalculation.com