Add 80/84 and 90/81
1st number: 80/84, 2nd number: 1 9/81
80/84 + 90/81 is 130/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
80/84 = 80 × 27/84 × 27 = 2160/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
90/81 = 90 × 28/81 × 28 = 2520/2268 - Add the two like fractions:
2160/2268 + 2520/2268 = 2160 + 2520/2268 = 4680/2268 - 4680/2268 simplified gives 130/63
- So, 80/84 + 90/81 = 130/63
In mixed form: 24/63
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