Add 81/12 and 21/54
1st number: 6 9/12, 2nd number: 21/54
81/12 + 21/54 is 257/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
81/12 = 81 × 9/12 × 9 = 729/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108 - Add the two like fractions:
729/108 + 42/108 = 729 + 42/108 = 771/108 - 771/108 simplified gives 257/36
- So, 81/12 + 21/54 = 257/36
In mixed form: 75/36
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