Hi there, hopefully somebody can help me with the following problem.

I need to iterate a variable to solve a problem I have. It needs to look something like this:

x := 1
x = 1
...
...
...
x := x + 5
x = 6
...
...
...
x := x - 2
x = 4
...
...
etc

Is it possible to do this is SMath? At the moment it does not allow me to change x once I have declared it as shown in the first line.

Like this?

Wrote

At the moment it does not allow me to change x once I have declared it as shown in the first line.

I suppose that's because you use "=" button to assign a variable its value; but when a variable is already defined, the "=" button has its usual (in SMath) meaning of displaying its value, instead of assignment.

To assign, use ":" button instead.

You must post either the Smath work sheet that shows the stuff to solve
or an image that show enough information. No solver is fool proof and
often solving = muffing ! Collabs read you not as fast it used to be
in the Mathsoft Collaboratory [that gorgeous forum PTC scrapped].

Cheers ,,,, waiting to read you again.

Jean