Solve the equation:

x+9 = - 6

x+nine=negative six

What is the value of x?

x = - 15

Step-by-step explanation:

To solve the equation, we want to find out what x is. In order to do this, we have to get x by itself. Perform the opposite of what is being done to the equation. Keep in mind, everything done to one side, has to be done to the other.

x+9=-6

9 is being added onto x. (+9) The opposite of addition is subtraction. Therefore, subtract 9 from both sides (-9) + 9 and - 9 will cancel and leave x by itself.

x+9-9 = - 6-9

x=-6-9

x=-15

If we want to check our answer, we can substitute - 15 for x in the original equation.

x+9 = - 6

-15+9=-6

-6=-6

This is true, so we know our answer is correct.

The value of x is - 15.

Work:

x + 9 = - 6

Move the 9 by subtracting from both sides.

x + 9 - 9 = - 6 - 9

x = - 15

Therefore x is - 15.