Add 21/12 and 63/14
1st number: 1 9/12, 2nd number: 4 7/14
21/12 + 63/14 is 25/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 14 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
21/12 = 21 × 7/12 × 7 = 147/84 - Likewise, for the 2nd fraction, since 14 × 6 = 84,
63/14 = 63 × 6/14 × 6 = 378/84 - Add the two like fractions:
147/84 + 378/84 = 147 + 378/84 = 525/84 - 525/84 simplified gives 25/4
- So, 21/12 + 63/14 = 25/4
In mixed form: 61/4
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