Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 84/45 from 90/30

1st number: 3 0/30, 2nd number: 1 39/45

90/30 - 84/45 is 17/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 45 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 30 × 3 = 90,
    90/30 = 90 × 3/30 × 3 = 270/90
  3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
    84/45 = 84 × 2/45 × 2 = 168/90
  4. Subtract the two like fractions:
    270/90 - 168/90 = 270 - 168/90 = 102/90
  5. After reducing the fraction, the answer is 17/15
  6. In mixed form: 12/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com