Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 80/42 and 45/54

1st number: 1 38/42, 2nd number: 45/54

80/42 + 45/54 is 115/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    80/42 = 80 × 9/42 × 9 = 720/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    45/54 = 45 × 7/54 × 7 = 315/378
  4. Add the two like fractions:
    720/378 + 315/378 = 720 + 315/378 = 1035/378
  5. 1035/378 simplified gives 115/42
  6. So, 80/42 + 45/54 = 115/42
    In mixed form: 231/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com