Question

what is e/4 + 2f-3 when e =12 andf =1/2

Answer 1

Hey!

When putting in a number for a variable, we want to put it on parenthesis. So, let's write the problem with the variables substituted.
$(12)/4+2(1/2)-3$
We could also write it like this:
$\frac{\left(12\right)}{4}+2\left(\frac{1}{2}\right)-3=1$
To start, we have to remove the parenthesis.
$=\frac{12}{4}+2\cdot \frac{1}{2}-3$
Let's simplify the first fraction.
$\frac{12}{4}=3$
Let's simplify the second part:
$2\cdot \frac{1}{2}$
$=\frac{1\cdot \:2}{2}$
$=\frac{2}{2}$
$=1$

We would be left with,
$=3+1-3$
Simplify.
$=1$

Thanks!
-TetraFish

Answer 2

Hello there! Thank you for asking your question here at Brainly. I will be assisting you with this problem and will teach you how to handle it on your own in the future.

Let's take a look at our question.
"What is e/4 + 2f -3 when e = 12 and f = 1/2?"

To solve for this, we need to plug in our values to their proper values.

Let's replace "e" with "12" and "f" with "0.5" (0.5 is equal to 1/2).

Our expression should look like this now:
12/4 + 2(0.5) -3

Well, we can simplify two parts of our expression: 12/4 and 2(0.5).

We can simplify 12/4 into 3, as 12 divided by 4 is 3.
We can also simplify 2(0.5) into 1, as multiplying by 0.5 is the same as dividing by 2.

We now have:
3 + 1 - 3
We can cancel out 3 and -3 to make 0.
We are now left with 1.

Your answer remains as "1".

I hope this helps! :)