Add 12/15 and 3/9
12/15 + 3/9 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
12/15 = 12 × 3/15 × 3 = 36/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
3/9 = 3 × 5/9 × 5 = 15/45 - Add the two like fractions:
36/45 + 15/45 = 36 + 15/45 = 51/45 - 51/45 simplified gives 17/15
- So, 12/15 + 3/9 = 17/15
In mixed form: 12/15
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