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Add 54/42 and 5/15

1st number: 1 12/42, 2nd number: 5/15

54/42 + 5/15 is 34/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 15 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    54/42 = 54 × 5/42 × 5 = 270/210
  3. Likewise, for the 2nd fraction, since 15 × 14 = 210,
    5/15 = 5 × 14/15 × 14 = 70/210
  4. Add the two like fractions:
    270/210 + 70/210 = 270 + 70/210 = 340/210
  5. 340/210 simplified gives 34/21
  6. So, 54/42 + 5/15 = 34/21
    In mixed form: 113/21

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