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Add 12/15 and 42/40

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

12/15 + 42/40 is 37/20.

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,
    12/15 = 12 × 8/15 × 8 = 96/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    42/40 = 42 × 3/40 × 3 = 126/120
  4. Add the two like fractions:
    96/120 + 126/120 = 96 + 126/120 = 222/120
  5. 222/120 simplified gives 37/20
  6. So, 12/15 + 42/40 = 37/20
    In mixed form: 117/20

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