Subtract 4/40 from 20/32
20/32 - 4/40 is 21/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 40 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
20/32 = 20 × 5/32 × 5 = 100/160 - Likewise, for the 2nd fraction, since 40 × 4 = 160,
4/40 = 4 × 4/40 × 4 = 16/160 - Subtract the two like fractions:
100/160 - 16/160 = 100 - 16/160 = 84/160 - After reducing the fraction, the answer is 21/40
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