Subtract 21/98 from 8/42
8/42 - 21/98 is -1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
8/42 = 8 × 7/42 × 7 = 56/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
21/98 = 21 × 3/98 × 3 = 63/294 - Subtract the two like fractions:
56/294 - 63/294 = 56 - 63/294 = -7/294 - After reducing the fraction, the answer is -1/42
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