Subtract 9/30 from 18/40
18/40 - 9/30 is 3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
9/30 = 9 × 4/30 × 4 = 36/120 - Subtract the two like fractions:
54/120 - 36/120 = 54 - 36/120 = 18/120 - After reducing the fraction, the answer is 3/20
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