I always liked the second proof they show. You see it and you think something must be wrong with the method... but then try it with other numbers. 10x = 8.888

I always liked the second proof they show. You see it and you think something must be wrong with the method... but then try it with other numbers. 10x = 8.888 - x = 0.888 ------- 9x = 8; x = 8/9 = 0.888...