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Add 56/15 and 90/12

1st number: 3 11/15, 2nd number: 7 6/12

56/15 + 90/12 is 337/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 12 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 15 × 4 = 60,
    56/15 = 56 × 4/15 × 4 = 224/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    90/12 = 90 × 5/12 × 5 = 450/60
  4. Add the two like fractions:
    224/60 + 450/60 = 224 + 450/60 = 674/60
  5. 674/60 simplified gives 337/30
  6. So, 56/15 + 90/12 = 337/30
    In mixed form: 117/30

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