Subtract 63/98 from 10/21
10/21 - 63/98 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 21 × 14 = 294,
10/21 = 10 × 14/21 × 14 = 140/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
63/98 = 63 × 3/98 × 3 = 189/294 - Subtract the two like fractions:
140/294 - 189/294 = 140 - 189/294 = -49/294 - After reducing the fraction, the answer is -1/6
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