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Add 40/15 and 84/18

1st number: 2 10/15, 2nd number: 4 12/18

40/15 + 84/18 is 22/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 15 × 6 = 90,
    40/15 = 40 × 6/15 × 6 = 240/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    84/18 = 84 × 5/18 × 5 = 420/90
  4. Add the two like fractions:
    240/90 + 420/90 = 240 + 420/90 = 660/90
  5. 660/90 simplified gives 22/3
  6. So, 40/15 + 84/18 = 22/3
    In mixed form: 71/3

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