Subtract 15/40 from 12/54
12/54 - 15/40 is -11/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
12/54 = 12 × 20/54 × 20 = 240/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
15/40 = 15 × 27/40 × 27 = 405/1080 - Subtract the two like fractions:
240/1080 - 405/1080 = 240 - 405/1080 = -165/1080 - After reducing the fraction, the answer is -11/72
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