Question

7 – 3x = 9 + x

Please Help.

Answer 1

7-3x=9+x
Okay:) So what is your first step? Or are you lost?

Answer 2

Indeed I am. Lost, that is.

Answer 3

7-3x=9+x
add 3x to the right side, by adding it to the left side (it's currently negative [subtraction])
7=9+4x
Subtract 9 from the right and to the left
7-9= -2
-2=4x
Do you know how to solve from here?

Answer 4

Like said, I need help. I can't quite grasp it.

Answer 5

next you divide

Answer 6

4x/4=x
-2/4=-0.5
x=-0.5

Answer 7

That should be your answer.

Answer 8

You have to do the same thing to both sides of the =. You can do whatever you want (well, within the rules of mathematics).
\[7 - 3x = 9 + x\]\[7 - 3x + 9000 = 9 + x + 9000\]
That's valid. However, it doesn't help find x. To find x, we need to get it by itself. So do things that will help do that.
\[7 - 3x = 9 + x\]\[7 - 3x + 3x = 9 + x + 3x\]\[7 = 9 + 4x\]
That was actually helpful because it got rid of x's on one side.

Answer 9

If I could, I'd give you all a Medal for taking your time to answer. Have a nice day. - Pdm