Subtract 81/70 from 84/98
1st number: 84/98, 2nd number: 1 11/70
84/98 - 81/70 is -3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
84/98 = 84 × 5/98 × 5 = 420/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
81/70 = 81 × 7/70 × 7 = 567/490 - Subtract the two like fractions:
420/490 - 567/490 = 420 - 567/490 = -147/490 - After reducing the fraction, the answer is -3/10
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