Subtract 15/25 from 30/80
30/80 - 15/25 is -9/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 25 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
30/80 = 30 × 5/80 × 5 = 150/400 - Likewise, for the 2nd fraction, since 25 × 16 = 400,
15/25 = 15 × 16/25 × 16 = 240/400 - Subtract the two like fractions:
150/400 - 240/400 = 150 - 240/400 = -90/400 - After reducing the fraction, the answer is -9/40
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