Subtract 21/9 from 42/25
1st number: 1 17/25, 2nd number: 2 3/9
42/25 - 21/9 is -49/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
42/25 = 42 × 9/25 × 9 = 378/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
21/9 = 21 × 25/9 × 25 = 525/225 - Subtract the two like fractions:
378/225 - 525/225 = 378 - 525/225 = -147/225 - After reducing the fraction, the answer is -49/75
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