Question

Solve the equation: x+9= -6 x+nine=negative six What is the value of x?

Answer 1

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.

Answer 2

Answer:

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.