Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 70/21 from 1/4

1st number: 1/4, 2nd number: 3 7/21

1/4 - 70/21 is -37/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    1/4 = 1 × 21/4 × 21 = 21/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    70/21 = 70 × 4/21 × 4 = 280/84
  4. Subtract the two like fractions:
    21/84 - 280/84 = 21 - 280/84 = -259/84
  5. After reducing the fraction, the answer is -37/12

MathStep (Works offline)

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

Related:

© everydaycalculation.com