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Add 4/12 and 42/45

4/12 + 42/45 is 19/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 45 is 180
  2. For the 1st fraction, since 12 × 15 = 180,
    4/12 = 4 × 15/12 × 15 = 60/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    42/45 = 42 × 4/45 × 4 = 168/180
  4. Add the two fractions:
    60/180 + 168/180 = 60 + 168/180 = 228/180
  5. After reducing the fraction, the answer is 19/15
  6. In mixed form: 14/15

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