Add 63/18 and 21/7
1st number: 3 9/18, 2nd number: 3 0/7
63/18 + 21/7 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
63/18 = 63 × 7/18 × 7 = 441/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
21/7 = 21 × 18/7 × 18 = 378/126 - Add the two like fractions:
441/126 + 378/126 = 441 + 378/126 = 819/126 - 819/126 simplified gives 13/2
- So, 63/18 + 21/7 = 13/2
In mixed form: 61/2
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