Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 5/9 from 21/7

1st number: 3 0/7, 2nd number: 5/9

21/7 - 5/9 is 22/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 7 × 9 = 63,
    21/7 = 21 × 9/7 × 9 = 189/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    5/9 = 5 × 7/9 × 7 = 35/63
  4. Subtract the two like fractions:
    189/63 - 35/63 = 189 - 35/63 = 154/63
  5. After reducing the fraction, the answer is 22/9
  6. In mixed form: 24/9

MathStep (Works offline)

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

Related:

© everydaycalculation.com