Subtract 21/27 from 7/98
7/98 - 21/27 is -89/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 27 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 98 × 27 = 2646,
7/98 = 7 × 27/98 × 27 = 189/2646 - Likewise, for the 2nd fraction, since 27 × 98 = 2646,
21/27 = 21 × 98/27 × 98 = 2058/2646 - Subtract the two like fractions:
189/2646 - 2058/2646 = 189 - 2058/2646 = -1869/2646 - After reducing the fraction, the answer is -89/126
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