Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 98/30 from 1/21

1st number: 1/21, 2nd number: 3 8/30

1/21 - 98/30 is -338/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    1/21 = 1 × 10/21 × 10 = 10/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    98/30 = 98 × 7/30 × 7 = 686/210
  4. Subtract the two like fractions:
    10/210 - 686/210 = 10 - 686/210 = -676/210
  5. After reducing the fraction, the answer is -338/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com