Subtract 9/90 from 81/36
1st number: 2 9/36, 2nd number: 9/90
81/36 - 9/90 is 43/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
81/36 = 81 × 5/36 × 5 = 405/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Subtract the two like fractions:
405/180 - 18/180 = 405 - 18/180 = 387/180 - After reducing the fraction, the answer is 43/20
- In mixed form: 23/20
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