Subtract 21/25 from 15/42
15/42 - 21/25 is -169/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
15/42 = 15 × 25/42 × 25 = 375/1050 - Likewise, for the 2nd fraction, since 25 × 42 = 1050,
21/25 = 21 × 42/25 × 42 = 882/1050 - Subtract the two like fractions:
375/1050 - 882/1050 = 375 - 882/1050 = -507/1050 - After reducing the fraction, the answer is -169/350
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