Add 30/12 and 21/84
1st number: 2 6/12, 2nd number: 21/84
30/12 + 21/84 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
210/84 + 21/84 = 210 + 21/84 = 231/84 - 231/84 simplified gives 11/4
- So, 30/12 + 21/84 = 11/4
In mixed form: 23/4
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