Add 15/30 and 84/81
1st number: 15/30, 2nd number: 1 3/81
15/30 + 84/81 is 83/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
15/30 = 15 × 27/30 × 27 = 405/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
84/81 = 84 × 10/81 × 10 = 840/810 - Add the two like fractions:
405/810 + 840/810 = 405 + 840/810 = 1245/810 - 1245/810 simplified gives 83/54
- So, 15/30 + 84/81 = 83/54
In mixed form: 129/54
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