Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 14/7 from 21/30

1st number: 21/30, 2nd number: 2 0/7

21/30 - 14/7 is -13/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 7 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    21/30 = 21 × 7/30 × 7 = 147/210
  3. Likewise, for the 2nd fraction, since 7 × 30 = 210,
    14/7 = 14 × 30/7 × 30 = 420/210
  4. Subtract the two like fractions:
    147/210 - 420/210 = 147 - 420/210 = -273/210
  5. After reducing the fraction, the answer is -13/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com