Subtract 15/20 from 12/32
12/32 - 15/20 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 20 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
12/32 = 12 × 5/32 × 5 = 60/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
15/20 = 15 × 8/20 × 8 = 120/160 - Subtract the two like fractions:
60/160 - 120/160 = 60 - 120/160 = -60/160 - After reducing the fraction, the answer is -3/8
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