Help with solving for x in supplementary angles in parallel lines

I was able to find code that solved equations of ax+b=cx+d and manipulate it so it solved congruent angles in parallel lines.

However, I am trying to figure out how to manipulate the code so it solves supplementary angles in parallel lines in the form of ax+b+cx+d=180.

The original code is WAY above my skill set and I am surprised I was able to figure out slide one at all. I need slide two to work like slide one in the form mentioned above for supplementary angles.

Anyone able to figure this out?

Desmos Activity

Make these changes to rows 11 and 12 and then it should work!

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This worked exactly as it should :slight_smile: