Subtract 80/98 from 15/40
15/40 - 80/98 is -173/392.
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,
15/40 = 15 × 49/40 × 49 = 735/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
80/98 = 80 × 20/98 × 20 = 1600/1960 - Subtract the two like fractions:
735/1960 - 1600/1960 = 735 - 1600/1960 = -865/1960 - After reducing the fraction, the answer is -173/392
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