Subtract 45/32 from 21/20
1st number: 1 1/20, 2nd number: 1 13/32
21/20 - 45/32 is -57/160.
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,
21/20 = 21 × 8/20 × 8 = 168/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
45/32 = 45 × 5/32 × 5 = 225/160 - Subtract the two like fractions:
168/160 - 225/160 = 168 - 225/160 = -57/160
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