Subtract 18/9 from 18/40
1st number: 18/40, 2nd number: 2 0/9
18/40 - 18/9 is -31/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
18/9 = 18 × 40/9 × 40 = 720/360 - Subtract the two like fractions:
162/360 - 720/360 = 162 - 720/360 = -558/360 - After reducing the fraction, the answer is -31/20
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