Add 81/15 and 5/20
1st number: 5 6/15, 2nd number: 5/20
81/15 + 5/20 is 113/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
81/15 = 81 × 4/15 × 4 = 324/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
5/20 = 5 × 3/20 × 3 = 15/60 - Add the two like fractions:
324/60 + 15/60 = 324 + 15/60 = 339/60 - 339/60 simplified gives 113/20
- So, 81/15 + 5/20 = 113/20
In mixed form: 513/20
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