Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 1/40 and 21/30

1/40 + 21/30 is 29/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 30 is 120
  2. For the 1st fraction, since 40 × 3 = 120,
    1/40 = 1 × 3/40 × 3 = 3/120
  3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
    21/30 = 21 × 4/30 × 4 = 84/120
  4. Add the two fractions:
    3/120 + 84/120 = 3 + 84/120 = 87/120
  5. 87/120 simplified gives 29/40
  6. So, 1/40 + 21/30 = 29/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com