Add 15/4 and 81/30
1st number: 3 3/4, 2nd number: 2 21/30
15/4 + 81/30 is 129/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
15/4 = 15 × 15/4 × 15 = 225/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
81/30 = 81 × 2/30 × 2 = 162/60 - Add the two like fractions:
225/60 + 162/60 = 225 + 162/60 = 387/60 - 387/60 simplified gives 129/20
- So, 15/4 + 81/30 = 129/20
In mixed form: 69/20
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