Subtract 54/80 from 10/40
10/40 - 54/80 is -17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
10/40 = 10 × 2/40 × 2 = 20/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
54/80 = 54 × 1/80 × 1 = 54/80 - Subtract the two like fractions:
20/80 - 54/80 = 20 - 54/80 = -34/80 - After reducing the fraction, the answer is -17/40
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