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Add 40/42 and 21/20

1st number: 40/42, 2nd number: 1 1/20

40/42 + 21/20 is 841/420.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 42 × 10 = 420,
    40/42 = 40 × 10/42 × 10 = 400/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    21/20 = 21 × 21/20 × 21 = 441/420
  4. Add the two like fractions:
    400/420 + 441/420 = 400 + 441/420 = 841/420
  5. So, 40/42 + 21/20 = 841/420
    In mixed form: 21/420

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