Add 21/12 and 40/3
1st number: 1 9/12, 2nd number: 13 1/3
21/12 + 40/3 is 181/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 3 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 3 × 4 = 12,
40/3 = 40 × 4/3 × 4 = 160/12 - Add the two like fractions:
21/12 + 160/12 = 21 + 160/12 = 181/12 - So, 21/12 + 40/3 = 181/12
In mixed form: 151/12
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