Subtract 42/80 from 5/50
5/50 - 42/80 is -17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 50 × 8 = 400,
5/50 = 5 × 8/50 × 8 = 40/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
42/80 = 42 × 5/80 × 5 = 210/400 - Subtract the two like fractions:
40/400 - 210/400 = 40 - 210/400 = -170/400 - After reducing the fraction, the answer is -17/40
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