Subtract 21/25 from 25/45
25/45 - 21/25 is -64/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 25 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 45 × 5 = 225,
25/45 = 25 × 5/45 × 5 = 125/225 - Likewise, for the 2nd fraction, since 25 × 9 = 225,
21/25 = 21 × 9/25 × 9 = 189/225 - Subtract the two like fractions:
125/225 - 189/225 = 125 - 189/225 = -64/225
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