Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/21 and 48/45

1st number: 7/21, 2nd number: 1 3/45

7/21 + 48/45 is 7/5.

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,
    7/21 = 7 × 15/21 × 15 = 105/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    48/45 = 48 × 7/45 × 7 = 336/315
  4. Add the two like fractions:
    105/315 + 336/315 = 105 + 336/315 = 441/315
  5. 441/315 simplified gives 7/5
  6. So, 7/21 + 48/45 = 7/5
    In mixed form: 12/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com