Question

Solve: -2x - 15 = 6x + 9

Answer 1

Ok, well we want to isolate the variable. Do you know how to start off?

Answer 2

X=-3


-2x-15=6x+9

Since 6x contains the variable to solve for, move it to the left-hand side of the equation by subtracting 6x from both sides.
-2x-15-6x=9

Since -2x and -6x are like terms, subtract 6x from -2x to get -8x.
-8x-15=9

Since -15 does not contain the variable to solve for, move it to the right-hand side of the equation by adding 15 to both sides.
-8x=15+9

Add 9 to 15 to get 24.
-8x=24

Divide each term in the equation by -8.
-(8x)/(-8)=(24)/(-8)

Simplify the left-hand side of the equation by canceling the common factors.
x=(24)/(-8)

Simplify the right-hand side of the equation by simplifying each term.
x=-3