Subtract 10/12 from 9/40
9/40 - 10/12 is -73/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
9/40 = 9 × 3/40 × 3 = 27/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
10/12 = 10 × 10/12 × 10 = 100/120 - Subtract the two like fractions:
27/120 - 100/120 = 27 - 100/120 = -73/120
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