Subtract 20/9 from 90/54
1st number: 1 36/54, 2nd number: 2 2/9
90/54 - 20/9 is -5/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 9 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
90/54 = 90 × 1/54 × 1 = 90/54 - Likewise, for the 2nd fraction, since 9 × 6 = 54,
20/9 = 20 × 6/9 × 6 = 120/54 - Subtract the two like fractions:
90/54 - 120/54 = 90 - 120/54 = -30/54 - After reducing the fraction, the answer is -5/9
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