Add 81/4 and 21/10
1st number: 20 1/4, 2nd number: 2 1/10
81/4 + 21/10 is 447/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
81/4 = 81 × 5/4 × 5 = 405/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
21/10 = 21 × 2/10 × 2 = 42/20 - Add the two like fractions:
405/20 + 42/20 = 405 + 42/20 = 447/20 - So, 81/4 + 21/10 = 447/20
In mixed form: 227/20
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