Add 12/40 and 15/12
1st number: 12/40, 2nd number: 1 3/12
12/40 + 15/12 is 31/20.
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,
12/40 = 12 × 3/40 × 3 = 36/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
15/12 = 15 × 10/12 × 10 = 150/120 - Add the two like fractions:
36/120 + 150/120 = 36 + 150/120 = 186/120 - 186/120 simplified gives 31/20
- So, 12/40 + 15/12 = 31/20
In mixed form: 111/20
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