Add 21/81 and 54/4
1st number: 21/81, 2nd number: 13 2/4
21/81 + 54/4 is 743/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
54/4 = 54 × 81/4 × 81 = 4374/324 - Add the two like fractions:
84/324 + 4374/324 = 84 + 4374/324 = 4458/324 - 4458/324 simplified gives 743/54
- So, 21/81 + 54/4 = 743/54
In mixed form: 1341/54
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