Subtract 42/50 from 21/54
21/54 - 42/50 is -203/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 50 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 54 × 25 = 1350,
21/54 = 21 × 25/54 × 25 = 525/1350 - Likewise, for the 2nd fraction, since 50 × 27 = 1350,
42/50 = 42 × 27/50 × 27 = 1134/1350 - Subtract the two like fractions:
525/1350 - 1134/1350 = 525 - 1134/1350 = -609/1350 - After reducing the fraction, the answer is -203/450
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