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Add 12/80 and 63/40

1st number: 12/80, 2nd number: 1 23/40

12/80 + 63/40 is 69/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 40 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    12/80 = 12 × 1/80 × 1 = 12/80
  3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
    63/40 = 63 × 2/40 × 2 = 126/80
  4. Add the two like fractions:
    12/80 + 126/80 = 12 + 126/80 = 138/80
  5. 138/80 simplified gives 69/40
  6. So, 12/80 + 63/40 = 69/40
    In mixed form: 129/40

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