Add 18/9 and 15/12
1st number: 2 0/9, 2nd number: 1 3/12
18/9 + 15/12 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
18/9 = 18 × 4/9 × 4 = 72/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Add the two like fractions:
72/36 + 45/36 = 72 + 45/36 = 117/36 - 117/36 simplified gives 13/4
- So, 18/9 + 15/12 = 13/4
In mixed form: 31/4
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