Subtract 21/98 from 12/20
12/20 - 21/98 is 27/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
12/20 = 12 × 49/20 × 49 = 588/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
21/98 = 21 × 10/98 × 10 = 210/980 - Subtract the two like fractions:
588/980 - 210/980 = 588 - 210/980 = 378/980 - After reducing the fraction, the answer is 27/70
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