Subtract 18/40 from 42/54
42/54 - 18/40 is 59/180.
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,
42/54 = 42 × 20/54 × 20 = 840/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
18/40 = 18 × 27/40 × 27 = 486/1080 - Subtract the two like fractions:
840/1080 - 486/1080 = 840 - 486/1080 = 354/1080 - After reducing the fraction, the answer is 59/180
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