Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 80/7 from 90/42

1st number: 2 6/42, 2nd number: 11 3/7

90/42 - 80/7 is -65/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 7 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 42 × 1 = 42,
    90/42 = 90 × 1/42 × 1 = 90/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    80/7 = 80 × 6/7 × 6 = 480/42
  4. Subtract the two like fractions:
    90/42 - 480/42 = 90 - 480/42 = -390/42
  5. After reducing the fraction, the answer is -65/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com