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Add 42/21 and 3/40

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

42/21 + 3/40 is 83/40.

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,
    42/21 = 42 × 40/21 × 40 = 1680/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    3/40 = 3 × 21/40 × 21 = 63/840
  4. Add the two like fractions:
    1680/840 + 63/840 = 1680 + 63/840 = 1743/840
  5. 1743/840 simplified gives 83/40
  6. So, 42/21 + 3/40 = 83/40
    In mixed form: 23/40

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