Add 63/18 and 21/12
1st number: 3 9/18, 2nd number: 1 9/12
63/18 + 21/12 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
63/18 = 63 × 2/18 × 2 = 126/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
21/12 = 21 × 3/12 × 3 = 63/36 - Add the two like fractions:
126/36 + 63/36 = 126 + 63/36 = 189/36 - 189/36 simplified gives 21/4
- So, 63/18 + 21/12 = 21/4
In mixed form: 51/4
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