Subtract 90/27 from 7/40
1st number: 7/40, 2nd number: 3 9/27
7/40 - 90/27 is -379/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
7/40 = 7 × 27/40 × 27 = 189/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
90/27 = 90 × 40/27 × 40 = 3600/1080 - Subtract the two like fractions:
189/1080 - 3600/1080 = 189 - 3600/1080 = -3411/1080 - After reducing the fraction, the answer is -379/120
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