Subtract 81/7 from 36/27
1st number: 1 9/27, 2nd number: 11 4/7
36/27 - 81/7 is -215/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
36/27 = 36 × 7/27 × 7 = 252/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
81/7 = 81 × 27/7 × 27 = 2187/189 - Subtract the two like fractions:
252/189 - 2187/189 = 252 - 2187/189 = -1935/189 - After reducing the fraction, the answer is -215/21
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