Subtract 45/25 from 15/20
1st number: 15/20, 2nd number: 1 20/25
15/20 - 45/25 is -21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
15/20 = 15 × 5/20 × 5 = 75/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
45/25 = 45 × 4/25 × 4 = 180/100 - Subtract the two like fractions:
75/100 - 180/100 = 75 - 180/100 = -105/100 - After reducing the fraction, the answer is -21/20
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