Subtract 12/40 from 1/9
1/9 - 12/40 is -17/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
1/9 = 1 × 40/9 × 40 = 40/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Subtract the two like fractions:
40/360 - 108/360 = 40 - 108/360 = -68/360 - After reducing the fraction, the answer is -17/90
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