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Add 63/40 and 12/42

1st number: 1 23/40, 2nd number: 12/42

63/40 + 12/42 is 521/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 42 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    63/40 = 63 × 21/40 × 21 = 1323/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    12/42 = 12 × 20/42 × 20 = 240/840
  4. Add the two like fractions:
    1323/840 + 240/840 = 1323 + 240/840 = 1563/840
  5. 1563/840 simplified gives 521/280
  6. So, 63/40 + 12/42 = 521/280
    In mixed form: 1241/280

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