I think it can be solved using parallels but I have no idea how.
Solve for "X"
Following @user130512's comment, set up:
$$ 90+90+2x+x+B+(360-B)=720 $$
Copyright © 2021 JogjaFile Inc.
Following @user130512's comment, set up:
$$ 90+90+2x+x+B+(360-B)=720 $$