Add 84/12 and 80/81
1st number: 7 0/12, 2nd number: 80/81
84/12 + 80/81 is 647/81.
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,
84/12 = 84 × 27/12 × 27 = 2268/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
80/81 = 80 × 4/81 × 4 = 320/324 - Add the two like fractions:
2268/324 + 320/324 = 2268 + 320/324 = 2588/324 - 2588/324 simplified gives 647/81
- So, 84/12 + 80/81 = 647/81
In mixed form: 780/81
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