Add 12/30 and 15/9
1st number: 12/30, 2nd number: 1 6/9
12/30 + 15/9 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
12/30 = 12 × 3/30 × 3 = 36/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
15/9 = 15 × 10/9 × 10 = 150/90 - Add the two like fractions:
36/90 + 150/90 = 36 + 150/90 = 186/90 - 186/90 simplified gives 31/15
- So, 12/30 + 15/9 = 31/15
In mixed form: 21/15
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