Add 90/28 and 15/81
1st number: 3 6/28, 2nd number: 15/81
90/28 + 15/81 is 1285/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
90/28 = 90 × 81/28 × 81 = 7290/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
15/81 = 15 × 28/81 × 28 = 420/2268 - Add the two like fractions:
7290/2268 + 420/2268 = 7290 + 420/2268 = 7710/2268 - 7710/2268 simplified gives 1285/378
- So, 90/28 + 15/81 = 1285/378
In mixed form: 3151/378
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