Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 20/90 from 20/7

1st number: 2 6/7, 2nd number: 20/90

20/7 - 20/90 is 166/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 7 × 90 = 630,
    20/7 = 20 × 90/7 × 90 = 1800/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    20/90 = 20 × 7/90 × 7 = 140/630
  4. Subtract the two like fractions:
    1800/630 - 140/630 = 1800 - 140/630 = 1660/630
  5. After reducing the fraction, the answer is 166/63
  6. In mixed form: 240/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com