Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 60/21 from 42/15

1st number: 2 12/15, 2nd number: 2 18/21

42/15 - 60/21 is -2/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    42/15 = 42 × 7/15 × 7 = 294/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    60/21 = 60 × 5/21 × 5 = 300/105
  4. Subtract the two like fractions:
    294/105 - 300/105 = 294 - 300/105 = -6/105
  5. After reducing the fraction, the answer is -2/35

MathStep (Works offline)

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

Related:

© everydaycalculation.com