Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 16/84 from 30/15

1st number: 2 0/15, 2nd number: 16/84

30/15 - 16/84 is 38/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    30/15 = 30 × 28/15 × 28 = 840/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    16/84 = 16 × 5/84 × 5 = 80/420
  4. Subtract the two like fractions:
    840/420 - 80/420 = 840 - 80/420 = 760/420
  5. After reducing the fraction, the answer is 38/21
  6. In mixed form: 117/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com