Subtract 21/45 from 42/25
1st number: 1 17/25, 2nd number: 21/45
42/25 - 21/45 is 91/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 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 45 × 5 = 225,
21/45 = 21 × 5/45 × 5 = 105/225 - Subtract the two like fractions:
378/225 - 105/225 = 378 - 105/225 = 273/225 - After reducing the fraction, the answer is 91/75
- In mixed form: 116/75
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