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Add 40/21 and 1/40

1st number: 1 19/21, 2nd number: 1/40

40/21 + 1/40 is 1621/840.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 21 × 40 = 840,
    40/21 = 40 × 40/21 × 40 = 1600/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    1/40 = 1 × 21/40 × 21 = 21/840
  4. Add the two like fractions:
    1600/840 + 21/840 = 1600 + 21/840 = 1621/840
  5. So, 40/21 + 1/40 = 1621/840
    In mixed form: 1781/840

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