Subtract 81/90 from 12/3
1st number: 4 0/3, 2nd number: 81/90
12/3 - 81/90 is 31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
12/3 = 12 × 30/3 × 30 = 360/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Subtract the two like fractions:
360/90 - 81/90 = 360 - 81/90 = 279/90 - After reducing the fraction, the answer is 31/10
- In mixed form: 31/10
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