Add 84/4 and 80/81
1st number: 21 0/4, 2nd number: 80/81
84/4 + 80/81 is 1781/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
84/4 = 84 × 81/4 × 81 = 6804/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
80/81 = 80 × 4/81 × 4 = 320/324 - Add the two like fractions:
6804/324 + 320/324 = 6804 + 320/324 = 7124/324 - 7124/324 simplified gives 1781/81
- So, 84/4 + 80/81 = 1781/81
In mixed form: 2180/81
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