Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 1/40 from 28/7

1st number: 4 0/7, 2nd number: 1/40

28/7 - 1/40 is 159/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 7 × 40 = 280,
    28/7 = 28 × 40/7 × 40 = 1120/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    1/40 = 1 × 7/40 × 7 = 7/280
  4. Subtract the two like fractions:
    1120/280 - 7/280 = 1120 - 7/280 = 1113/280
  5. After reducing the fraction, the answer is 159/40
  6. In mixed form: 339/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com