Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 9/7 from 3/80

1st number: 3/80, 2nd number: 1 2/7

3/80 - 9/7 is -699/560.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 7 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    3/80 = 3 × 7/80 × 7 = 21/560
  3. Likewise, for the 2nd fraction, since 7 × 80 = 560,
    9/7 = 9 × 80/7 × 80 = 720/560
  4. Subtract the two like fractions:
    21/560 - 720/560 = 21 - 720/560 = -699/560

MathStep (Works offline)

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

Related:

© everydaycalculation.com