Subtract 81/3 from 40/90
1st number: 40/90, 2nd number: 27 0/3
40/90 - 81/3 is -239/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 3 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 3 × 30 = 90,
81/3 = 81 × 30/3 × 30 = 2430/90 - Subtract the two like fractions:
40/90 - 2430/90 = 40 - 2430/90 = -2390/90 - After reducing the fraction, the answer is -239/9
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