Add 90/84 and 30/81
1st number: 1 6/84, 2nd number: 30/81
90/84 + 30/81 is 545/378.
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,
90/84 = 90 × 27/84 × 27 = 2430/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
30/81 = 30 × 28/81 × 28 = 840/2268 - Add the two like fractions:
2430/2268 + 840/2268 = 2430 + 840/2268 = 3270/2268 - 3270/2268 simplified gives 545/378
- So, 90/84 + 30/81 = 545/378
In mixed form: 1167/378
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