Subtract 42/50 from 5/21
5/21 - 42/50 is -316/525.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
5/21 = 5 × 50/21 × 50 = 250/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
42/50 = 42 × 21/50 × 21 = 882/1050 - Subtract the two like fractions:
250/1050 - 882/1050 = 250 - 882/1050 = -632/1050 - After reducing the fraction, the answer is -316/525
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