What makes the value of x makes the equation true?

Step-by-step explanation:

You need to find the value of x. To do this, you need to isolate the variable:

Move the 80 to the left side of the equation using the reverse operation of '+', which is subtraction:

Now move the coefficient, 7x, to the right side of the equation using the reverse operation of addition (because it's a positive number), which is subtraction:

Now isolate the variable using reverse operations. The coefficient can also be seen as , so the opposite of multiplication is division. Divide by 2, remembering to do the same on both sides of the equation to keep it stable:

The value of x is -40.

:Done

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

(23*2)-12=x     x=34

step-by-step explanation: