# How do you evaluate #3x + 15# when x= 12?

##### 3 Answers

Mar 4, 2018

Substitute the given value for x into the equation and then solve.

#### Explanation:

In this case the given x-value is 12, so we put 12 in place of the x giving us the expression

Parentheses: in this case, there is nothing to solve inside of the parentheses

Exponents: none

Multiplication: here we multiply

Addition: now we add

Subtraction: none

So the final answer is 51.

#### Explanation:

Replace the

Mar 4, 2018

#### Explanation:

Substitute