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Add 72/40 and 12/15

1st number: 1 32/40, 2nd number: 12/15

72/40 + 12/15 is 13/5.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 40 × 3 = 120,
    72/40 = 72 × 3/40 × 3 = 216/120
  3. Likewise, for the 2nd fraction, since 15 × 8 = 120,
    12/15 = 12 × 8/15 × 8 = 96/120
  4. Add the two like fractions:
    216/120 + 96/120 = 216 + 96/120 = 312/120
  5. 312/120 simplified gives 13/5
  6. So, 72/40 + 12/15 = 13/5
    In mixed form: 23/5

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