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Add 18/12 and 42/40

1st number: 1 6/12, 2nd number: 1 2/40

18/12 + 42/40 is 51/20.

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,
    18/12 = 18 × 10/12 × 10 = 180/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    42/40 = 42 × 3/40 × 3 = 126/120
  4. Add the two like fractions:
    180/120 + 126/120 = 180 + 126/120 = 306/120
  5. 306/120 simplified gives 51/20
  6. So, 18/12 + 42/40 = 51/20
    In mixed form: 211/20

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