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Add 54/15 and 6/40

1st number: 3 9/15, 2nd number: 6/40

54/15 + 6/40 is 15/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 15 × 8 = 120,
    54/15 = 54 × 8/15 × 8 = 432/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    6/40 = 6 × 3/40 × 3 = 18/120
  4. Add the two like fractions:
    432/120 + 18/120 = 432 + 18/120 = 450/120
  5. 450/120 simplified gives 15/4
  6. So, 54/15 + 6/40 = 15/4
    In mixed form: 33/4

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