Add 81/27 and 42/18
1st number: 3 0/27, 2nd number: 2 6/18
81/27 + 42/18 is 16/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
81/27 = 81 × 2/27 × 2 = 162/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
42/18 = 42 × 3/18 × 3 = 126/54 - Add the two like fractions:
162/54 + 126/54 = 162 + 126/54 = 288/54 - 288/54 simplified gives 16/3
- So, 81/27 + 42/18 = 16/3
In mixed form: 51/3
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