Add 81/30 and 15/12
1st number: 2 21/30, 2nd number: 1 3/12
81/30 + 15/12 is 79/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
81/30 = 81 × 2/30 × 2 = 162/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
15/12 = 15 × 5/12 × 5 = 75/60 - Add the two like fractions:
162/60 + 75/60 = 162 + 75/60 = 237/60 - 237/60 simplified gives 79/20
- So, 81/30 + 15/12 = 79/20
In mixed form: 319/20
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