Subtract 42/98 from 5/40
5/40 - 42/98 is -17/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
5/40 = 5 × 49/40 × 49 = 245/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
42/98 = 42 × 20/98 × 20 = 840/1960 - Subtract the two like fractions:
245/1960 - 840/1960 = 245 - 840/1960 = -595/1960 - After reducing the fraction, the answer is -17/56
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