Subtract 54/40 from 18/36
1st number: 18/36, 2nd number: 1 14/40
18/36 - 54/40 is -17/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
18/36 = 18 × 10/36 × 10 = 180/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
54/40 = 54 × 9/40 × 9 = 486/360 - Subtract the two like fractions:
180/360 - 486/360 = 180 - 486/360 = -306/360 - After reducing the fraction, the answer is -17/20
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