Add 21/4 and 81/8
1st number: 5 1/4, 2nd number: 10 1/8
21/4 + 81/8 is 123/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
21/4 = 21 × 2/4 × 2 = 42/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
81/8 = 81 × 1/8 × 1 = 81/8 - Add the two like fractions:
42/8 + 81/8 = 42 + 81/8 = 123/8 - So, 21/4 + 81/8 = 123/8
In mixed form: 153/8
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