Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/30 and 21/18

1st number: 1 10/30, 2nd number: 1 3/18

40/30 + 21/18 is 5/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 18 is 90
  2. For the 1st fraction, since 30 × 3 = 90,
    40/30 = 40 × 3/30 × 3 = 120/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  4. Add the two fractions:
    120/90 + 105/90 = 120 + 105/90 = 225/90
  5. 225/90 simplified gives 5/2
  6. So, 40/30 + 21/18 = 5/2
    In mixed form: 21/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com