Add 21/12 and 15/36
1st number: 1 9/12, 2nd number: 15/36
21/12 + 15/36 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
21/12 = 21 × 3/12 × 3 = 63/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
15/36 = 15 × 1/36 × 1 = 15/36 - Add the two like fractions:
63/36 + 15/36 = 63 + 15/36 = 78/36 - 78/36 simplified gives 13/6
- So, 21/12 + 15/36 = 13/6
In mixed form: 21/6
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