Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 90/12 from 2/45

1st number: 2/45, 2nd number: 7 6/12

2/45 - 90/12 is -671/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 12 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    2/45 = 2 × 4/45 × 4 = 8/180
  3. Likewise, for the 2nd fraction, since 12 × 15 = 180,
    90/12 = 90 × 15/12 × 15 = 1350/180
  4. Subtract the two like fractions:
    8/180 - 1350/180 = 8 - 1350/180 = -1342/180
  5. After reducing the fraction, the answer is -671/90

MathStep (Works offline)

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

Related:

© everydaycalculation.com