Subtract 21/20 from 30/32
1st number: 30/32, 2nd number: 1 1/20
30/32 - 21/20 is -9/80.
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,
30/32 = 30 × 5/32 × 5 = 150/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
21/20 = 21 × 8/20 × 8 = 168/160 - Subtract the two like fractions:
150/160 - 168/160 = 150 - 168/160 = -18/160 - After reducing the fraction, the answer is -9/80
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