Add 28/36 and 30/81
28/36 + 30/81 is 31/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 36 × 9 = 324,
28/36 = 28 × 9/36 × 9 = 252/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
30/81 = 30 × 4/81 × 4 = 120/324 - Add the two like fractions:
252/324 + 120/324 = 252 + 120/324 = 372/324 - 372/324 simplified gives 31/27
- So, 28/36 + 30/81 = 31/27
In mixed form: 14/27
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