Subtract 16/25 from 12/40
12/40 - 16/25 is -17/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 25 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
12/40 = 12 × 5/40 × 5 = 60/200 - Likewise, for the 2nd fraction, since 25 × 8 = 200,
16/25 = 16 × 8/25 × 8 = 128/200 - Subtract the two like fractions:
60/200 - 128/200 = 60 - 128/200 = -68/200 - After reducing the fraction, the answer is -17/50
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