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Add 54/80 and 5/4

1st number: 54/80, 2nd number: 1 1/4

54/80 + 5/4 is 77/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 4 is 80
  2. For the 1st fraction, since 80 × 1 = 80,
    54/80 = 54 × 1/80 × 1 = 54/80
  3. Likewise, for the 2nd fraction, since 4 × 20 = 80,
    5/4 = 5 × 20/4 × 20 = 100/80
  4. Add the two fractions:
    54/80 + 100/80 = 54 + 100/80 = 154/80
  5. 154/80 simplified gives 77/40
  6. So, 54/80 + 5/4 = 77/40
    In mixed form: 137/40

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