Add 15/8 and 30/81
1st number: 1 7/8, 2nd number: 30/81
15/8 + 30/81 is 485/216.
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,
15/8 = 15 × 81/8 × 81 = 1215/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
30/81 = 30 × 8/81 × 8 = 240/648 - Add the two like fractions:
1215/648 + 240/648 = 1215 + 240/648 = 1455/648 - 1455/648 simplified gives 485/216
- So, 15/8 + 30/81 = 485/216
In mixed form: 253/216
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