Subtract 42/63 from 21/25
21/25 - 42/63 is 13/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 25 × 63 = 1575,
21/25 = 21 × 63/25 × 63 = 1323/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
42/63 = 42 × 25/63 × 25 = 1050/1575 - Subtract the two like fractions:
1323/1575 - 1050/1575 = 1323 - 1050/1575 = 273/1575 - After reducing the fraction, the answer is 13/75
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