Subtract 81/9 from 15/30
1st number: 15/30, 2nd number: 9 0/9
15/30 - 81/9 is -17/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
81/9 = 81 × 10/9 × 10 = 810/90 - Subtract the two like fractions:
45/90 - 810/90 = 45 - 810/90 = -765/90 - After reducing the fraction, the answer is -17/2
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