Add 21/84 and 28/12
1st number: 21/84, 2nd number: 2 4/12
21/84 + 28/12 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84 - Add the two like fractions:
21/84 + 196/84 = 21 + 196/84 = 217/84 - 217/84 simplified gives 31/12
- So, 21/84 + 28/12 = 31/12
In mixed form: 27/12
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