Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/4 and 42/5

1st number: 4 2/4, 2nd number: 8 2/5

18/4 + 42/5 is 129/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    18/4 = 18 × 5/4 × 5 = 90/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    42/5 = 42 × 4/5 × 4 = 168/20
  4. Add the two like fractions:
    90/20 + 168/20 = 90 + 168/20 = 258/20
  5. 258/20 simplified gives 129/10
  6. So, 18/4 + 42/5 = 129/10
    In mixed form: 129/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com