Subtract 21/50 from 6/80
6/80 - 21/50 is -69/200.
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,
6/80 = 6 × 5/80 × 5 = 30/400 - Likewise, for the 2nd fraction, since 50 × 8 = 400,
21/50 = 21 × 8/50 × 8 = 168/400 - Subtract the two like fractions:
30/400 - 168/400 = 30 - 168/400 = -138/400 - After reducing the fraction, the answer is -69/200
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