Subtract 90/27 from 18/9
1st number: 2 0/9, 2nd number: 3 9/27
18/9 - 90/27 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 9 × 3 = 27,
18/9 = 18 × 3/9 × 3 = 54/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
90/27 = 90 × 1/27 × 1 = 90/27 - Subtract the two like fractions:
54/27 - 90/27 = 54 - 90/27 = -36/27 - After reducing the fraction, the answer is -4/3
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