Step-by-step explanation:
[tex]3(a+b)[/tex]
Since we know that a equals -1/2 and b equals 2 1/2, then we can plug in the values into the equation.
[tex]3(-\frac{1}{2} +2 \frac{1}{2} )[/tex]
First, solve everything in the parentheses.
[tex]3(2)[/tex]
Now, multiply 3 by 2.
[tex]3*2=6[/tex]
So, your answer will be 6.
