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Add 30/8 and 81/7

1st number: 3 6/8, 2nd number: 11 4/7

30/8 + 81/7 is 429/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 7 is 56

    Next, find the equivalent fraction of both fractional numbers with denominator 56
  2. For the 1st fraction, since 8 × 7 = 56,
    30/8 = 30 × 7/8 × 7 = 210/56
  3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
    81/7 = 81 × 8/7 × 8 = 648/56
  4. Add the two like fractions:
    210/56 + 648/56 = 210 + 648/56 = 858/56
  5. 858/56 simplified gives 429/28
  6. So, 30/8 + 81/7 = 429/28
    In mixed form: 159/28

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