Subtract 81/63 from 21/75
1st number: 21/75, 2nd number: 1 18/63
21/75 - 81/63 is -176/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 75 × 21 = 1575,
21/75 = 21 × 21/75 × 21 = 441/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
81/63 = 81 × 25/63 × 25 = 2025/1575 - Subtract the two like fractions:
441/1575 - 2025/1575 = 441 - 2025/1575 = -1584/1575 - After reducing the fraction, the answer is -176/175
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