Subtract 49/50 from 20/40
20/40 - 49/50 is -12/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
20/40 = 20 × 5/40 × 5 = 100/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
49/50 = 49 × 4/50 × 4 = 196/200 - Subtract the two like fractions:
100/200 - 196/200 = 100 - 196/200 = -96/200 - After reducing the fraction, the answer is -12/25
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