Add 21/5 and 81/12
1st number: 4 1/5, 2nd number: 6 9/12
21/5 + 81/12 is 219/20.
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,
81/12 = 81 × 5/12 × 5 = 405/60 - Add the two like fractions:
252/60 + 405/60 = 252 + 405/60 = 657/60 - 657/60 simplified gives 219/20
- So, 21/5 + 81/12 = 219/20
In mixed form: 1019/20
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