Subtract 18/21 from 25/50
25/50 - 18/21 is -5/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
25/50 = 25 × 21/50 × 21 = 525/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
18/21 = 18 × 50/21 × 50 = 900/1050 - Subtract the two like fractions:
525/1050 - 900/1050 = 525 - 900/1050 = -375/1050 - After reducing the fraction, the answer is -5/14
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