Subtract 9/3 from 15/40
1st number: 15/40, 2nd number: 3 0/3
15/40 - 9/3 is -21/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
9/3 = 9 × 40/3 × 40 = 360/120 - Subtract the two like fractions:
45/120 - 360/120 = 45 - 360/120 = -315/120 - After reducing the fraction, the answer is -21/8
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