Subtract 18/32 from 8/20
8/20 - 18/32 is -13/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 20 × 8 = 160,
8/20 = 8 × 8/20 × 8 = 64/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
18/32 = 18 × 5/32 × 5 = 90/160 - Subtract the two like fractions:
64/160 - 90/160 = 64 - 90/160 = -26/160 - After reducing the fraction, the answer is -13/80
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