Add 27/40 and 15/12
1st number: 27/40, 2nd number: 1 3/12
27/40 + 15/12 is 77/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
27/40 = 27 × 3/40 × 3 = 81/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
15/12 = 15 × 10/12 × 10 = 150/120 - Add the two like fractions:
81/120 + 150/120 = 81 + 150/120 = 231/120 - 231/120 simplified gives 77/40
- So, 27/40 + 15/12 = 77/40
In mixed form: 137/40
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