Add 15/16 and 42/81
15/16 + 42/81 is 629/432.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
15/16 = 15 × 81/16 × 81 = 1215/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
42/81 = 42 × 16/81 × 16 = 672/1296 - Add the two like fractions:
1215/1296 + 672/1296 = 1215 + 672/1296 = 1887/1296 - 1887/1296 simplified gives 629/432
- So, 15/16 + 42/81 = 629/432
In mixed form: 1197/432
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