Subtract 20/49 from 18/36
18/36 - 20/49 is 9/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 49 is 1764
Next, find the equivalent fraction of both fractional numbers with denominator 1764 - For the 1st fraction, since 36 × 49 = 1764,
18/36 = 18 × 49/36 × 49 = 882/1764 - Likewise, for the 2nd fraction, since 49 × 36 = 1764,
20/49 = 20 × 36/49 × 36 = 720/1764 - Subtract the two like fractions:
882/1764 - 720/1764 = 882 - 720/1764 = 162/1764 - After reducing the fraction, the answer is 9/98
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