Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 84/42 and 90/54

1st number: 2 0/42, 2nd number: 1 36/54

84/42 + 90/54 is 11/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378
  2. For the 1st fraction, since 42 × 9 = 378,
    84/42 = 84 × 9/42 × 9 = 756/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    90/54 = 90 × 7/54 × 7 = 630/378
  4. Add the two fractions:
    756/378 + 630/378 = 756 + 630/378 = 1386/378
  5. 1386/378 simplified gives 11/3
  6. So, 84/42 + 90/54 = 11/3
    In mixed form: 32/3

MathStep (Works offline)

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

Related:

© everydaycalculation.com