Subtract 10/32 from 1/20
1/20 - 10/32 is -21/80.
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,
1/20 = 1 × 8/20 × 8 = 8/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
10/32 = 10 × 5/32 × 5 = 50/160 - Subtract the two like fractions:
8/160 - 50/160 = 8 - 50/160 = -42/160 - After reducing the fraction, the answer is -21/80
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