Subtract 90/18 from 15/2
1st number: 7 1/2, 2nd number: 5 0/18
15/2 - 90/18 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
15/2 = 15 × 9/2 × 9 = 135/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
90/18 = 90 × 1/18 × 1 = 90/18 - Subtract the two like fractions:
135/18 - 90/18 = 135 - 90/18 = 45/18 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
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