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Add 80/18 and 40/15

1st number: 4 8/18, 2nd number: 2 10/15

80/18 + 40/15 is 64/9.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    80/18 = 80 × 5/18 × 5 = 400/90
  3. Likewise, for the 2nd fraction, since 15 × 6 = 90,
    40/15 = 40 × 6/15 × 6 = 240/90
  4. Add the two like fractions:
    400/90 + 240/90 = 400 + 240/90 = 640/90
  5. 640/90 simplified gives 64/9
  6. So, 80/18 + 40/15 = 64/9
    In mixed form: 71/9

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