Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 1/80 from 7/90

7/90 - 1/80 is 47/720.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    7/90 = 7 × 8/90 × 8 = 56/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    1/80 = 1 × 9/80 × 9 = 9/720
  4. Subtract the two like fractions:
    56/720 - 9/720 = 56 - 9/720 = 47/720

MathStep (Works offline)

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

Related:

© everydaycalculation.com