Add 15/8 and 42/81
1st number: 1 7/8, 2nd number: 42/81
15/8 + 42/81 is 517/216.
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,
42/81 = 42 × 8/81 × 8 = 336/648 - Add the two like fractions:
1215/648 + 336/648 = 1215 + 336/648 = 1551/648 - 1551/648 simplified gives 517/216
- So, 15/8 + 42/81 = 517/216
In mixed form: 285/216
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