Question

4x -9 = 4x - 7
Is there even a solution?

Answer 1

4x -9 = 4x - 7
gives you
-9=-7
which is NEVER true
so, there is no solution to 4x -9 = 4x - 7

Answer 2

Ok......now I have both sides in Absolute Value. Does that change it?

Answer 3

yes.

Answer 4

because you can have (4x-9) = - (4x-7)

Answer 5

when |x|=a
x=a, x=-a

Answer 6

(4x-9) = - (4x-7) <-----has a solution
can you find it ?

Answer 7

x = 2

Answer 8

I'm confused if it is no solution when it is 4x - 9 = 4x - 7 though

Answer 9

x=2 is correct :)
wats the confusion ?
-9 can never equal -7
so, 4x-9=4x-7 cannot hold true for any value of x.

Answer 10

Oh ok. Thank you I see my problem. I just needed confirmation. Thank you for your help :D

Answer 11

welcome ^_^