3 1/4 + (-1 1/2) + 2 1/4=
13/4 + 3/2 +9/4=
What I am leaving out
a minus sign
3 1/4 + (-1 1/2) + 2 1/4=
5 1/2 - 1 1/2 = 4
To solve this problem, you need to find the sum of the mixed numbers. Here's how you can do it:
1. Start by converting the mixed numbers into improper fractions.
The first mixed number, 3 1/4, can be written as (3 × 4 + 1)/4 = 13/4.
The second mixed number, -1 1/2, can be written as (-1 × 2 + 1)/2 = -3/2.
The third mixed number, 2 1/4, can be written as (2 × 4 + 1)/4 = 9/4.
2. Now that you have converted the mixed numbers into improper fractions, you can simply add them together:
13/4 + (-3/2) + 9/4 = 13/4 - 6/4 + 9/4 = (13 - 6 + 9)/4 = 16/4 = 4.
Therefore, the sum of 3 1/4, -1 1/2, and 2 1/4 is 4.
Please note that I am assuming the "-" sign is indicating a negative number for the second mixed number. If that is not the case, please let me know.