Subtract 90/27 from 20/9
1st number: 2 2/9, 2nd number: 3 9/27
20/9 - 90/27 is -10/9.
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,
20/9 = 20 × 3/9 × 3 = 60/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
90/27 = 90 × 1/27 × 1 = 90/27 - Subtract the two like fractions:
60/27 - 90/27 = 60 - 90/27 = -30/27 - After reducing the fraction, the answer is -10/9
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