Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 90/72 from 3/10

1st number: 3/10, 2nd number: 1 18/72

3/10 - 90/72 is -19/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 10 × 36 = 360,
    3/10 = 3 × 36/10 × 36 = 108/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    90/72 = 90 × 5/72 × 5 = 450/360
  4. Subtract the two like fractions:
    108/360 - 450/360 = 108 - 450/360 = -342/360
  5. After reducing the fraction, the answer is -19/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com