Add 16/81 and 21/42
16/81 + 21/42 is 113/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
16/81 = 16 × 14/81 × 14 = 224/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
21/42 = 21 × 27/42 × 27 = 567/1134 - Add the two like fractions:
224/1134 + 567/1134 = 224 + 567/1134 = 791/1134 - 791/1134 simplified gives 113/162
- So, 16/81 + 21/42 = 113/162
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