Subtract 20/50 from 7/80
7/80 - 20/50 is -5/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 50 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
7/80 = 7 × 5/80 × 5 = 35/400 - Likewise, for the 2nd fraction, since 50 × 8 = 400,
20/50 = 20 × 8/50 × 8 = 160/400 - Subtract the two like fractions:
35/400 - 160/400 = 35 - 160/400 = -125/400 - After reducing the fraction, the answer is -5/16
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