Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 28/21 and 60/45

1st number: 1 7/21, 2nd number: 1 15/45

28/21 + 60/45 is 8/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 21 × 15 = 315,
    28/21 = 28 × 15/21 × 15 = 420/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    60/45 = 60 × 7/45 × 7 = 420/315
  4. Add the two like fractions:
    420/315 + 420/315 = 420 + 420/315 = 840/315
  5. 840/315 simplified gives 8/3
  6. So, 28/21 + 60/45 = 8/3
    In mixed form: 22/3

MathStep (Works offline)

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

Related:

© everydaycalculation.com