Add 81/8 and 8/20
1st number: 10 1/8, 2nd number: 8/20
81/8 + 8/20 is 421/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
8/20 = 8 × 2/20 × 2 = 16/40 - Add the two like fractions:
405/40 + 16/40 = 405 + 16/40 = 421/40 - So, 81/8 + 8/20 = 421/40
In mixed form: 1021/40
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