Add 15/12 and 81/40
1st number: 1 3/12, 2nd number: 2 1/40
15/12 + 81/40 is 131/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
15/12 = 15 × 10/12 × 10 = 150/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120 - Add the two like fractions:
150/120 + 243/120 = 150 + 243/120 = 393/120 - 393/120 simplified gives 131/40
- So, 15/12 + 81/40 = 131/40
In mixed form: 311/40
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