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Add 42/12 and 48/45

1st number: 3 6/12, 2nd number: 1 3/45

42/12 + 48/45 is 137/30.

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,
    42/12 = 42 × 15/12 × 15 = 630/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    48/45 = 48 × 4/45 × 4 = 192/180
  4. Add the two fractions:
    630/180 + 192/180 = 630 + 192/180 = 822/180
  5. After reducing the fraction, the answer is 137/30
  6. In mixed form: 417/30

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