Add 72/81 and 21/12
1st number: 72/81, 2nd number: 1 9/12
72/81 + 21/12 is 95/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
72/81 = 72 × 4/81 × 4 = 288/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
21/12 = 21 × 27/12 × 27 = 567/324 - Add the two like fractions:
288/324 + 567/324 = 288 + 567/324 = 855/324 - 855/324 simplified gives 95/36
- So, 72/81 + 21/12 = 95/36
In mixed form: 223/36
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