Subtract 90/27 from 15/12
1st number: 1 3/12, 2nd number: 3 9/27
15/12 - 90/27 is -25/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
15/12 = 15 × 9/12 × 9 = 135/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
90/27 = 90 × 4/27 × 4 = 360/108 - Subtract the two like fractions:
135/108 - 360/108 = 135 - 360/108 = -225/108 - After reducing the fraction, the answer is -25/12
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