subtracting positive rational numbers 1 1/2 - 2
1 1/2 - 2 = 3/2 - 4/2 = -1/2.
To subtract positive rational numbers, such as 1 1/2 - 2, follow these steps:
Step 1: Convert the mixed numbers to improper fractions.
- 1 1/2 can be rewritten as (2 * 1) + 1 = 3/2.
- 2 can be written as 2/1.
Step 2: Find a common denominator.
Since the denominators are already different (2 and 1), you do not need to find a common denominator.
Step 3: Subtract the fractions.
Subtract the numerators and keep the denominator the same.
3/2 - 2/1 = (3 - 4)/2 = -1/2
Step 4: Simplify (if necessary).
In this case, the resulting fraction, -1/2, is already in simplest form.
Therefore, 1 1/2 - 2 equals -1/2.