Add 15/4 and 81/5
1st number: 3 3/4, 2nd number: 16 1/5
15/4 + 81/5 is 399/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
15/4 = 15 × 5/4 × 5 = 75/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
81/5 = 81 × 4/5 × 4 = 324/20 - Add the two like fractions:
75/20 + 324/20 = 75 + 324/20 = 399/20 - So, 15/4 + 81/5 = 399/20
In mixed form: 1919/20
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