Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 36/12 and 21/40

1st number: 3 0/12, 2nd number: 21/40

36/12 + 21/40 is 141/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120
  2. For the 1st fraction, since 12 × 10 = 120,
    36/12 = 36 × 10/12 × 10 = 360/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    21/40 = 21 × 3/40 × 3 = 63/120
  4. Add the two fractions:
    360/120 + 63/120 = 360 + 63/120 = 423/120
  5. 423/120 simplified gives 141/40
  6. So, 36/12 + 21/40 = 141/40
    In mixed form: 321/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com