Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 28/70 from 30/15

1st number: 2 0/15, 2nd number: 28/70

30/15 - 28/70 is 8/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 70 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 15 × 14 = 210,
    30/15 = 30 × 14/15 × 14 = 420/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    28/70 = 28 × 3/70 × 3 = 84/210
  4. Subtract the two like fractions:
    420/210 - 84/210 = 420 - 84/210 = 336/210
  5. After reducing the fraction, the answer is 8/5
  6. In mixed form: 13/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com