Subtract 30/20 from 21/98
1st number: 21/98, 2nd number: 1 10/20
21/98 - 30/20 is -9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 98 × 10 = 980,
21/98 = 21 × 10/98 × 10 = 210/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
30/20 = 30 × 49/20 × 49 = 1470/980 - Subtract the two like fractions:
210/980 - 1470/980 = 210 - 1470/980 = -1260/980 - After reducing the fraction, the answer is -9/7
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