If

x = 8
y = 1

Then
x + y = 9
x + y + x = 17, round up to 18 = z
Offset = z * x = 136 (I don't know how, because 8 x 18 = 144, but whatever)
y + Offset = 137

The takeaway? Never randomize your God-forsaken math puzzles again, Dev. I was enjoying myself a lot with this game until I ran into this festering cowpat of a puzzle.

if
x = 3
y = 4

then
x + y = 7 (= z)
x + y + x = 10 (= offset)
z * x = 30
offset + y = 34

if
x = 8
y = 3

then
x + y = 11
x + y + x = z = 19
z * y = offset = ?
y + offset = ?

if
x = 6
y = 6

then
x + y = 12
x + y + x = z = 18 (don't care about odd and even numbers)
z * y = offset = 108
y + offset = 114

I don't understand

The problem is not your math. Its that the two bottom walls need to be finished at once
Its not individual walls again.

Thanks, this didn't help at all.