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Add 42/21 and 45/6

1st number: 2 0/21, 2nd number: 7 3/6

42/21 + 45/6 is 19/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 6 is 42
  2. For the 1st fraction, since 21 × 2 = 42,
    42/21 = 42 × 2/21 × 2 = 84/42
  3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
    45/6 = 45 × 7/6 × 7 = 315/42
  4. Add the two fractions:
    84/42 + 315/42 = 84 + 315/42 = 399/42
  5. 399/42 simplified gives 19/2
  6. So, 42/21 + 45/6 = 19/2
    In mixed form: 91/2

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