Add 3/81 and 21/8
1st number: 3/81, 2nd number: 2 5/8
3/81 + 21/8 is 575/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 8 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
3/81 = 3 × 8/81 × 8 = 24/648 - Likewise, for the 2nd fraction, since 8 × 81 = 648,
21/8 = 21 × 81/8 × 81 = 1701/648 - Add the two like fractions:
24/648 + 1701/648 = 24 + 1701/648 = 1725/648 - 1725/648 simplified gives 575/216
- So, 3/81 + 21/8 = 575/216
In mixed form: 2143/216
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