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Add 12/8 and 42/80

1st number: 1 4/8, 2nd number: 42/80

12/8 + 42/80 is 81/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 80 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 8 × 10 = 80,
    12/8 = 12 × 10/8 × 10 = 120/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    42/80 = 42 × 1/80 × 1 = 42/80
  4. Add the two like fractions:
    120/80 + 42/80 = 120 + 42/80 = 162/80
  5. 162/80 simplified gives 81/40
  6. So, 12/8 + 42/80 = 81/40
    In mixed form: 21/40

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