Subtract 30/50 from 9/40
9/40 - 30/50 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
9/40 = 9 × 5/40 × 5 = 45/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
30/50 = 30 × 4/50 × 4 = 120/200 - Subtract the two like fractions:
45/200 - 120/200 = 45 - 120/200 = -75/200 - After reducing the fraction, the answer is -3/8
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