Subtract 12/16 from 21/98
21/98 - 12/16 is -15/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 16 is 784
Next, find the equivalent fraction of both fractional numbers with denominator 784 - For the 1st fraction, since 98 × 8 = 784,
21/98 = 21 × 8/98 × 8 = 168/784 - Likewise, for the 2nd fraction, since 16 × 49 = 784,
12/16 = 12 × 49/16 × 49 = 588/784 - Subtract the two like fractions:
168/784 - 588/784 = 168 - 588/784 = -420/784 - After reducing the fraction, the answer is -15/28
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