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Add 21/42 and 45/4

1st number: 21/42, 2nd number: 11 1/4

21/42 + 45/4 is 47/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 4 is 84
  2. For the 1st fraction, since 42 × 2 = 84,
    21/42 = 21 × 2/42 × 2 = 42/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    45/4 = 45 × 21/4 × 21 = 945/84
  4. Add the two fractions:
    42/84 + 945/84 = 42 + 945/84 = 987/84
  5. After reducing the fraction, the answer is 47/4
  6. In mixed form: 113/4

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