Add 63/4 and 81/5
1st number: 15 3/4, 2nd number: 16 1/5
63/4 + 81/5 is 639/20.
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,
63/4 = 63 × 5/4 × 5 = 315/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
81/5 = 81 × 4/5 × 4 = 324/20 - Add the two like fractions:
315/20 + 324/20 = 315 + 324/20 = 639/20 - So, 63/4 + 81/5 = 639/20
In mixed form: 3119/20
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