Subtract 20/42 from 18/98
18/98 - 20/42 is -43/147.
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,
18/98 = 18 × 3/98 × 3 = 54/294 - Likewise, for the 2nd fraction, since 42 × 7 = 294,
20/42 = 20 × 7/42 × 7 = 140/294 - Subtract the two like fractions:
54/294 - 140/294 = 54 - 140/294 = -86/294 - After reducing the fraction, the answer is -43/147
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