Subtract 18/90 from 5/2
1st number: 2 1/2, 2nd number: 18/90
5/2 - 18/90 is 23/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
5/2 = 5 × 45/2 × 45 = 225/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Subtract the two like fractions:
225/90 - 18/90 = 225 - 18/90 = 207/90 - After reducing the fraction, the answer is 23/10
- In mixed form: 23/10
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