Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 20/21 and 1/40

20/21 + 1/40 is 821/840.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840
  2. For the 1st fraction, since 21 × 40 = 840,
    20/21 = 20 × 40/21 × 40 = 800/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    1/40 = 1 × 21/40 × 21 = 21/840
  4. Add the two fractions:
    800/840 + 21/840 = 800 + 21/840 = 821/840

Related:

Use fraction calculator with our all-in-one calculator app: Download for Android, Download for iOS

© everydaycalculation.com