Add 12/3 and 28/21
1st number: 4 0/3, 2nd number: 1 7/21
12/3 + 28/21 is 16/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
12/3 = 12 × 7/3 × 7 = 84/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
28/21 = 28 × 1/21 × 1 = 28/21 - Add the two like fractions:
84/21 + 28/21 = 84 + 28/21 = 112/21 - 112/21 simplified gives 16/3
- So, 12/3 + 28/21 = 16/3
In mixed form: 51/3
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