Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/18 and 4/30

1st number: 1 3/18, 2nd number: 4/30

21/18 + 4/30 is 13/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 30 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    4/30 = 4 × 3/30 × 3 = 12/90
  4. Add the two like fractions:
    105/90 + 12/90 = 105 + 12/90 = 117/90
  5. 117/90 simplified gives 13/10
  6. So, 21/18 + 4/30 = 13/10
    In mixed form: 13/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com