Subtract 7/4 from 21/98
1st number: 21/98, 2nd number: 1 3/4
21/98 - 7/4 is -43/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 4 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
21/98 = 21 × 2/98 × 2 = 42/196 - Likewise, for the 2nd fraction, since 4 × 49 = 196,
7/4 = 7 × 49/4 × 49 = 343/196 - Subtract the two like fractions:
42/196 - 343/196 = 42 - 343/196 = -301/196 - After reducing the fraction, the answer is -43/28
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