Subtract 90/54 from 7/40
1st number: 7/40, 2nd number: 1 36/54
7/40 - 90/54 is -179/120.
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,
7/40 = 7 × 27/40 × 27 = 189/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
90/54 = 90 × 20/54 × 20 = 1800/1080 - Subtract the two like fractions:
189/1080 - 1800/1080 = 189 - 1800/1080 = -1611/1080 - After reducing the fraction, the answer is -179/120
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