Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 21/84 from 30/36

30/36 - 21/84 is 7/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 84 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 36 × 7 = 252,
    30/36 = 30 × 7/36 × 7 = 210/252
  3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
    21/84 = 21 × 3/84 × 3 = 63/252
  4. Subtract the two like fractions:
    210/252 - 63/252 = 210 - 63/252 = 147/252
  5. After reducing the fraction, the answer is 7/12

MathStep (Works offline)

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

Related:

© everydaycalculation.com