# Question #01d14

##### 1 Answer

Jan 12, 2017

To check your answer substitute the calculated value for the unknown. See explanation.

#### Explanation:

To check if your value is a solution of the given equation you have to substitute the calculated value for the variable and see if left side equals right.

**Example 1**

Suppose you got

Left side equals right so the answer is correct.

**Example 2**

Now let's suppose that you got

Left side DOES NOT equal right, so the answer