Add 18/40 and 15/12
1st number: 18/40, 2nd number: 1 3/12
18/40 + 15/12 is 17/10.
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,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
15/12 = 15 × 10/12 × 10 = 150/120 - Add the two like fractions:
54/120 + 150/120 = 54 + 150/120 = 204/120 - 204/120 simplified gives 17/10
- So, 18/40 + 15/12 = 17/10
In mixed form: 17/10
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