Subtract 72/40 from 40/54
1st number: 40/54, 2nd number: 1 32/40
40/54 - 72/40 is -143/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
40/54 = 40 × 20/54 × 20 = 800/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
72/40 = 72 × 27/40 × 27 = 1944/1080 - Subtract the two like fractions:
800/1080 - 1944/1080 = 800 - 1944/1080 = -1144/1080 - After reducing the fraction, the answer is -143/135
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