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Add 9/8 and 15/42

1st number: 1 1/8, 2nd number: 15/42

9/8 + 15/42 is 83/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 42 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    9/8 = 9 × 21/8 × 21 = 189/168
  3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
    15/42 = 15 × 4/42 × 4 = 60/168
  4. Add the two like fractions:
    189/168 + 60/168 = 189 + 60/168 = 249/168
  5. 249/168 simplified gives 83/56
  6. So, 9/8 + 15/42 = 83/56
    In mixed form: 127/56

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