Subtract 21/18 from 42/98
1st number: 42/98, 2nd number: 1 3/18
42/98 - 21/18 is -31/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 98 × 9 = 882,
42/98 = 42 × 9/98 × 9 = 378/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
21/18 = 21 × 49/18 × 49 = 1029/882 - Subtract the two like fractions:
378/882 - 1029/882 = 378 - 1029/882 = -651/882 - After reducing the fraction, the answer is -31/42
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