Add 15/12 and 7/40
1st number: 1 3/12, 2nd number: 7/40
15/12 + 7/40 is 57/40.
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,
7/40 = 7 × 3/40 × 3 = 21/120 - Add the two like fractions:
150/120 + 21/120 = 150 + 21/120 = 171/120 - 171/120 simplified gives 57/40
- So, 15/12 + 7/40 = 57/40
In mixed form: 117/40
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