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Add 1/2 and 21/40

1/2 + 21/40 is 41/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 40 is 40
  2. For the 1st fraction, since 2 × 20 = 40,
    1/2 = 1 × 20/2 × 20 = 20/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    21/40 = 21 × 1/40 × 1 = 21/40
  4. Add the two fractions:
    20/40 + 21/40 = 20 + 21/40 = 41/40
  5. So, 1/2 + 21/40 = 41/40
    In mixed form: 11/40

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