Subtract 81/30 from 28/98
1st number: 28/98, 2nd number: 2 21/30
28/98 - 81/30 is -169/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
28/98 = 28 × 15/98 × 15 = 420/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
81/30 = 81 × 49/30 × 49 = 3969/1470 - Subtract the two like fractions:
420/1470 - 3969/1470 = 420 - 3969/1470 = -3549/1470 - After reducing the fraction, the answer is -169/70
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