Subtract 18/40 from 10/80
10/80 - 18/40 is -13/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
10/80 = 10 × 1/80 × 1 = 10/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
18/40 = 18 × 2/40 × 2 = 36/80 - Subtract the two like fractions:
10/80 - 36/80 = 10 - 36/80 = -26/80 - After reducing the fraction, the answer is -13/40
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