Subtract 72/80 from 18/50
18/50 - 72/80 is -27/50.
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,
18/50 = 18 × 8/50 × 8 = 144/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
72/80 = 72 × 5/80 × 5 = 360/400 - Subtract the two like fractions:
144/400 - 360/400 = 144 - 360/400 = -216/400 - After reducing the fraction, the answer is -27/50
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