Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 27/30 from 9/42

9/42 - 27/30 is -24/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    9/42 = 9 × 5/42 × 5 = 45/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    27/30 = 27 × 7/30 × 7 = 189/210
  4. Subtract the two like fractions:
    45/210 - 189/210 = 45 - 189/210 = -144/210
  5. After reducing the fraction, the answer is -24/35

MathStep (Works offline)

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

Related:

© everydaycalculation.com