# After substituting, what is the first step when evaluating #x+3x-4.2# when x=5?

##### 1 Answer

Look at PEMDAS for guidance.

#### Explanation:

After substituting

PEMDAS states the order of operations as followed:

P arentheses

E xponents/Square Roots

M ultiplication/D ivision

A ddition/S ubtraction

What this means is that you are supposed to do whatever is in the parentheses first. Then you are supposed to do exponents and square roots. After that, multiplication and division (from left to right), and finally, addition and subtraction (also from left to right).

In this problem, we look at the parentheses and it's just a

So the first step after evaluating