Subtract 15/54 from 42/40
1st number: 1 2/40, 2nd number: 15/54
42/40 - 15/54 is 139/180.
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,
42/40 = 42 × 27/40 × 27 = 1134/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
15/54 = 15 × 20/54 × 20 = 300/1080 - Subtract the two like fractions:
1134/1080 - 300/1080 = 1134 - 300/1080 = 834/1080 - After reducing the fraction, the answer is 139/180
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