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Add 30/42 and 21/20

1st number: 30/42, 2nd number: 1 1/20

30/42 + 21/20 is 247/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420
  2. For the 1st fraction, since 42 × 10 = 420,
    30/42 = 30 × 10/42 × 10 = 300/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    21/20 = 21 × 21/20 × 21 = 441/420
  4. Add the two fractions:
    300/420 + 441/420 = 300 + 441/420 = 741/420
  5. 741/420 simplified gives 247/140
  6. So, 30/42 + 21/20 = 247/140
    In mixed form: 1107/140

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