Subtract 90/27 from 21/6
1st number: 3 3/6, 2nd number: 3 9/27
21/6 - 90/27 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 6 × 9 = 54,
21/6 = 21 × 9/6 × 9 = 189/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
90/27 = 90 × 2/27 × 2 = 180/54 - Subtract the two like fractions:
189/54 - 180/54 = 189 - 180/54 = 9/54 - After reducing the fraction, the answer is 1/6
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