Subtract 28/98 from 7/20
7/20 - 28/98 is 9/140.
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,
7/20 = 7 × 49/20 × 49 = 343/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
28/98 = 28 × 10/98 × 10 = 280/980 - Subtract the two like fractions:
343/980 - 280/980 = 343 - 280/980 = 63/980 - After reducing the fraction, the answer is 9/140
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