Subtract 18/32 from 20/80
20/80 - 18/32 is -5/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 80 × 2 = 160,
20/80 = 20 × 2/80 × 2 = 40/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
18/32 = 18 × 5/32 × 5 = 90/160 - Subtract the two like fractions:
40/160 - 90/160 = 40 - 90/160 = -50/160 - After reducing the fraction, the answer is -5/16
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