Subtract 81/12 from 90/6
1st number: 15 0/6, 2nd number: 6 9/12
90/6 - 81/12 is 33/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
90/6 = 90 × 2/6 × 2 = 180/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
81/12 = 81 × 1/12 × 1 = 81/12 - Subtract the two like fractions:
180/12 - 81/12 = 180 - 81/12 = 99/12 - After reducing the fraction, the answer is 33/4
- In mixed form: 81/4
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