Subtract 21/20 from 42/32
1st number: 1 10/32, 2nd number: 1 1/20
42/32 - 21/20 is 21/80.
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,
42/32 = 42 × 5/32 × 5 = 210/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
21/20 = 21 × 8/20 × 8 = 168/160 - Subtract the two like fractions:
210/160 - 168/160 = 210 - 168/160 = 42/160 - After reducing the fraction, the answer is 21/80
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