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Add 4/84 and 42/45

4/84 + 42/45 is 103/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 45 is 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    4/84 = 4 × 15/84 × 15 = 60/1260
  3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
    42/45 = 42 × 28/45 × 28 = 1176/1260
  4. Add the two fractions:
    60/1260 + 1176/1260 = 60 + 1176/1260 = 1236/1260
  5. After reducing the fraction, the answer is 103/105

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