Subtract 90/6 from 81/84
1st number: 81/84, 2nd number: 15 0/6
81/84 - 90/6 is -393/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 6 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
81/84 = 81 × 1/84 × 1 = 81/84 - Likewise, for the 2nd fraction, since 6 × 14 = 84,
90/6 = 90 × 14/6 × 14 = 1260/84 - Subtract the two like fractions:
81/84 - 1260/84 = 81 - 1260/84 = -1179/84 - After reducing the fraction, the answer is -393/28
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