Subtract 12/10 from 21/98
1st number: 21/98, 2nd number: 1 2/10
21/98 - 12/10 is -69/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
12/10 = 12 × 49/10 × 49 = 588/490 - Subtract the two like fractions:
105/490 - 588/490 = 105 - 588/490 = -483/490 - After reducing the fraction, the answer is -69/70
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