Question

Evaluate 8 − 12 ÷ 2 + 3.

Answer 1

You must solve this in the order of PEMDAS
That means solving in the order below
Parenthesis, Exponents, Multiplication, Division, Addition, then Subtraction. 

So let divide first.
12 ÷ 2 = 6 
Now we have 
8 - 6 + 3
Add next, 
8 - 9 
Then subtract 
8 - 9 = -1 
Your answer is -1 

Answer 2

Because of the order of operation, you would first do the division, which makes the expression 8-6+3. Now you would perform them left to right, first into 2+3, then get your answer of 5.