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Add 81/7 and 10/40

1st number: 11 4/7, 2nd number: 10/40

81/7 + 10/40 is 331/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 7 × 40 = 280,
    81/7 = 81 × 40/7 × 40 = 3240/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    10/40 = 10 × 7/40 × 7 = 70/280
  4. Add the two like fractions:
    3240/280 + 70/280 = 3240 + 70/280 = 3310/280
  5. 3310/280 simplified gives 331/28
  6. So, 81/7 + 10/40 = 331/28
    In mixed form: 1123/28

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