Add 21/12 and 9/6
1st number: 1 9/12, 2nd number: 1 3/6
21/12 + 9/6 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 6 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Likewise, for the 2nd fraction, since 6 × 2 = 12,
9/6 = 9 × 2/6 × 2 = 18/12 - Add the two like fractions:
21/12 + 18/12 = 21 + 18/12 = 39/12 - 39/12 simplified gives 13/4
- So, 21/12 + 9/6 = 13/4
In mixed form: 31/4
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