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Add 15/12 and 20/40

1st number: 1 3/12, 2nd number: 20/40

15/12 + 20/40 is 7/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 12 × 10 = 120,
    15/12 = 15 × 10/12 × 10 = 150/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    20/40 = 20 × 3/40 × 3 = 60/120
  4. Add the two like fractions:
    150/120 + 60/120 = 150 + 60/120 = 210/120
  5. 210/120 simplified gives 7/4
  6. So, 15/12 + 20/40 = 7/4
    In mixed form: 13/4

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