Subtract 10/20 from 7/98
7/98 - 10/20 is -3/7.
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,
7/98 = 7 × 10/98 × 10 = 70/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
10/20 = 10 × 49/20 × 49 = 490/980 - Subtract the two like fractions:
70/980 - 490/980 = 70 - 490/980 = -420/980 - After reducing the fraction, the answer is -3/7
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