Subtract 21/20 from 9/25
1st number: 9/25, 2nd number: 1 1/20
9/25 - 21/20 is -69/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
9/25 = 9 × 4/25 × 4 = 36/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
21/20 = 21 × 5/20 × 5 = 105/100 - Subtract the two like fractions:
36/100 - 105/100 = 36 - 105/100 = -69/100
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