Subtract 15/54 from 4/40
4/40 - 15/54 is -8/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
4/40 = 4 × 27/40 × 27 = 108/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
15/54 = 15 × 20/54 × 20 = 300/1080 - Subtract the two like fractions:
108/1080 - 300/1080 = 108 - 300/1080 = -192/1080 - After reducing the fraction, the answer is -8/45
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