Add 21/4 and 63/18
1st number: 5 1/4, 2nd number: 3 9/18
21/4 + 63/18 is 35/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
21/4 = 21 × 9/4 × 9 = 189/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
63/18 = 63 × 2/18 × 2 = 126/36 - Add the two like fractions:
189/36 + 126/36 = 189 + 126/36 = 315/36 - 315/36 simplified gives 35/4
- So, 21/4 + 63/18 = 35/4
In mixed form: 83/4
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