Albert Einstien XXIII

Arithmetic is fundamental math theory- the basics. You can't understand algebra or other match theories without knowing arithmetic. Most people in this thread gave algebraic answers . If "X" equal an apple, and "Y" is an orange, how many apples do I have, how many oranges do I have or.... how many fruits do I have? The quantitative answer is two (fruits). The qualitative answer is 1 apple and 1 orange. That's my two cents, for what it's worth. I'm not a mathematician but I did sleep at a Holiday Inn Express. LOL IYKYK.