Simultaneous Equations are maths puzzles which you have to find the value of some (I've done 2) things while making sure it works for the other part as well. There will always be only one possibility. You can change the difficulty so the simultaneous equations are easier/harder. WHEN YOU CHANGE THE DIFFICULTY, YOU NEED TO RESET THE DIFFICULTY TO GO TO THAT DIFFICULTY.
Thank you to scratch for excisting. Thanks to my dad for showing me simultaneous equations. Thanks to @dolphin19 for testing it. Please tell me if there is anything you think I should add. P.S. This is not real prices.
