Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/40 and 84/4

1st number: 15/40, 2nd number: 21 0/4

15/40 + 84/4 is 171/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 4 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 40 × 1 = 40,
    15/40 = 15 × 1/40 × 1 = 15/40
  3. Likewise, for the 2nd fraction, since 4 × 10 = 40,
    84/4 = 84 × 10/4 × 10 = 840/40
  4. Add the two like fractions:
    15/40 + 840/40 = 15 + 840/40 = 855/40
  5. 855/40 simplified gives 171/8
  6. So, 15/40 + 84/4 = 171/8
    In mixed form: 213/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com