Subtract 21/18 from 15/2
1st number: 7 1/2, 2nd number: 1 3/18
15/2 - 21/18 is 19/3.
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,
21/18 = 21 × 1/18 × 1 = 21/18 - Subtract the two like fractions:
135/18 - 21/18 = 135 - 21/18 = 114/18 - After reducing the fraction, the answer is 19/3
- In mixed form: 61/3
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