Subtract 8/81 from 90/60
1st number: 1 30/60, 2nd number: 8/81
90/60 - 8/81 is 227/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
90/60 = 90 × 27/60 × 27 = 2430/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
8/81 = 8 × 20/81 × 20 = 160/1620 - Subtract the two like fractions:
2430/1620 - 160/1620 = 2430 - 160/1620 = 2270/1620 - After reducing the fraction, the answer is 227/162
- In mixed form: 165/162
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