Add 28/8 and 90/81
1st number: 3 4/8, 2nd number: 1 9/81
28/8 + 90/81 is 83/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
28/8 = 28 × 81/8 × 81 = 2268/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
90/81 = 90 × 8/81 × 8 = 720/648 - Add the two like fractions:
2268/648 + 720/648 = 2268 + 720/648 = 2988/648 - 2988/648 simplified gives 83/18
- So, 28/8 + 90/81 = 83/18
In mixed form: 411/18
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