Subtract 72/27 from 42/40
1st number: 1 2/40, 2nd number: 2 18/27
42/40 - 72/27 is -97/60.
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,
42/40 = 42 × 27/40 × 27 = 1134/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
72/27 = 72 × 40/27 × 40 = 2880/1080 - Subtract the two like fractions:
1134/1080 - 2880/1080 = 1134 - 2880/1080 = -1746/1080 - After reducing the fraction, the answer is -97/60
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