Add 21/6 and 15/12
1st number: 3 3/6, 2nd number: 1 3/12
21/6 + 15/12 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
21/6 = 21 × 2/6 × 2 = 42/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
15/12 = 15 × 1/12 × 1 = 15/12 - Add the two like fractions:
42/12 + 15/12 = 42 + 15/12 = 57/12 - 57/12 simplified gives 19/4
- So, 21/6 + 15/12 = 19/4
In mixed form: 43/4
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