Basic Algebra Help

[Whhhyyhy]

I am trying to solve equations of the form a = 1/(b-c).

When (b-c) is in the denominator and you solve for c, the value for c is negative.
The image shows if I do some manipulations first, I can get the correct value.
Can someone point out why the original form is giving a negative number instead of the correct, positive value?
The image is taken from the Try-It-Now here: https://am.angouri.org/demo/
I have the issue in aspnet 6.0 using the latest version of angourimath through nuget as well as on Angouri web page.

[WhiteBlackGoose]

Probably because it interprets the first one as (1=1)/(2-x); otherwise not sure