Subtract 9/15 from 12/45
12/45 - 9/15 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
12/45 = 12 × 1/45 × 1 = 12/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
9/15 = 9 × 3/15 × 3 = 27/45 - Subtract the two like fractions:
12/45 - 27/45 = 12 - 27/45 = -15/45 - After reducing the fraction, the answer is -1/3
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