Add 7/12 and 80/81
7/12 + 80/81 is 509/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
7/12 = 7 × 27/12 × 27 = 189/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
80/81 = 80 × 4/81 × 4 = 320/324 - Add the two like fractions:
189/324 + 320/324 = 189 + 320/324 = 509/324 - So, 7/12 + 80/81 = 509/324
In mixed form: 1185/324
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