Add 21/5 and 63/12
1st number: 4 1/5, 2nd number: 5 3/12
21/5 + 63/12 is 189/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
21/5 = 21 × 12/5 × 12 = 252/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
63/12 = 63 × 5/12 × 5 = 315/60 - Add the two like fractions:
252/60 + 315/60 = 252 + 315/60 = 567/60 - 567/60 simplified gives 189/20
- So, 21/5 + 63/12 = 189/20
In mixed form: 99/20
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