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Add 56/15 and 70/18

1st number: 3 11/15, 2nd number: 3 16/18

56/15 + 70/18 is 343/45.

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,
    56/15 = 56 × 6/15 × 6 = 336/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    70/18 = 70 × 5/18 × 5 = 350/90
  4. Add the two like fractions:
    336/90 + 350/90 = 336 + 350/90 = 686/90
  5. 686/90 simplified gives 343/45
  6. So, 56/15 + 70/18 = 343/45
    In mixed form: 728/45

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