Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 42/12 from 30/10

1st number: 3 0/10, 2nd number: 3 6/12

30/10 - 42/12 is -1/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 12 is 60
  2. For the 1st fraction, since 10 × 6 = 60,
    30/10 = 30 × 6/10 × 6 = 180/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    42/12 = 42 × 5/12 × 5 = 210/60
  4. Subtract the two fractions:
    180/60 - 210/60 = 180 - 210/60 = -30/60
  5. After reducing the fraction, the answer is -1/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com