Add 1/16 and 21/81
1/16 + 21/81 is 139/432.
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,
1/16 = 1 × 81/16 × 81 = 81/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
21/81 = 21 × 16/81 × 16 = 336/1296 - Add the two like fractions:
81/1296 + 336/1296 = 81 + 336/1296 = 417/1296 - 417/1296 simplified gives 139/432
- So, 1/16 + 21/81 = 139/432
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