Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/21 and 30/75

15/21 + 30/75 is 39/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 75 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 21 × 25 = 525,
    15/21 = 15 × 25/21 × 25 = 375/525
  3. Likewise, for the 2nd fraction, since 75 × 7 = 525,
    30/75 = 30 × 7/75 × 7 = 210/525
  4. Add the two like fractions:
    375/525 + 210/525 = 375 + 210/525 = 585/525
  5. 585/525 simplified gives 39/35
  6. So, 15/21 + 30/75 = 39/35
    In mixed form: 14/35

MathStep (Works offline)

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

Related:

© everydaycalculation.com