Subtract 42/40 from 15/27
1st number: 15/27, 2nd number: 1 2/40
15/27 - 42/40 is -89/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
15/27 = 15 × 40/27 × 40 = 600/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
42/40 = 42 × 27/40 × 27 = 1134/1080 - Subtract the two like fractions:
600/1080 - 1134/1080 = 600 - 1134/1080 = -534/1080 - After reducing the fraction, the answer is -89/180
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