Subtract 40/36 from 18/27
1st number: 18/27, 2nd number: 1 4/36
18/27 - 40/36 is -4/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 36 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
18/27 = 18 × 4/27 × 4 = 72/108 - Likewise, for the 2nd fraction, since 36 × 3 = 108,
40/36 = 40 × 3/36 × 3 = 120/108 - Subtract the two like fractions:
72/108 - 120/108 = 72 - 120/108 = -48/108 - After reducing the fraction, the answer is -4/9
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