Subtract 18/45 from 1/40
1/40 - 18/45 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
18/45 = 18 × 8/45 × 8 = 144/360 - Subtract the two like fractions:
9/360 - 144/360 = 9 - 144/360 = -135/360 - After reducing the fraction, the answer is -3/8
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