Subtract 81/42 from 40/98
1st number: 40/98, 2nd number: 1 39/42
40/98 - 81/42 is -149/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 42 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
40/98 = 40 × 3/98 × 3 = 120/294 - Likewise, for the 2nd fraction, since 42 × 7 = 294,
81/42 = 81 × 7/42 × 7 = 567/294 - Subtract the two like fractions:
120/294 - 567/294 = 120 - 567/294 = -447/294 - After reducing the fraction, the answer is -149/98
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