Subtract 81/6 from 90/5
1st number: 18 0/5, 2nd number: 13 3/6
90/5 - 81/6 is 9/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
90/5 = 90 × 6/5 × 6 = 540/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
81/6 = 81 × 5/6 × 5 = 405/30 - Subtract the two like fractions:
540/30 - 405/30 = 540 - 405/30 = 135/30 - After reducing the fraction, the answer is 9/2
- In mixed form: 41/2
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