Question

What is the solution to X+9 = 24?
A. x = 33
B. x= 15
C. x= 18
D. x= 9​

Answer 1

X+9=24

Or,x=24-9

:.x=15

Explanation:

Answer 2

B. x=15

Explanation:

To find the solution to the equation, we must get x by itself on one side of the equation.

`x+9=24`

9 is being added to x. The inverse of addition is subtraction. Subtract 9 from both sides of the equation.

`x+9-9=24-9`

`x=24-9`

`x=15`

Let's check our solution. Plug 15 in for x.

`x+9=24 (x=15)`

`15+9=24`

`24=24`

This checks out, so we know our solution is correct. The answer is B. x=15