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Add 18/80 and 15/4

1st number: 18/80, 2nd number: 3 3/4

18/80 + 15/4 is 159/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 4 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    18/80 = 18 × 1/80 × 1 = 18/80
  3. Likewise, for the 2nd fraction, since 4 × 20 = 80,
    15/4 = 15 × 20/4 × 20 = 300/80
  4. Add the two like fractions:
    18/80 + 300/80 = 18 + 300/80 = 318/80
  5. 318/80 simplified gives 159/40
  6. So, 18/80 + 15/4 = 159/40
    In mixed form: 339/40

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