Add 81/7 and 18/27
1st number: 11 4/7, 2nd number: 18/27
81/7 + 18/27 is 257/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
81/7 = 81 × 27/7 × 27 = 2187/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
18/27 = 18 × 7/27 × 7 = 126/189 - Add the two like fractions:
2187/189 + 126/189 = 2187 + 126/189 = 2313/189 - 2313/189 simplified gives 257/21
- So, 81/7 + 18/27 = 257/21
In mixed form: 125/21
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