Subtract 21/54 from 15/50
15/50 - 21/54 is -4/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 54 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 50 × 27 = 1350,
15/50 = 15 × 27/50 × 27 = 405/1350 - Likewise, for the 2nd fraction, since 54 × 25 = 1350,
21/54 = 21 × 25/54 × 25 = 525/1350 - Subtract the two like fractions:
405/1350 - 525/1350 = 405 - 525/1350 = -120/1350 - After reducing the fraction, the answer is -4/45
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