My Story with my Brother

My small brother asked me “what does Algebra mean?". Then I said to him that if I have a problem with a number, like how I know this number, sometimes you can find it by using Algebra formulas. Like if you went with your friends and all of you bought a computer, if youwant to know how much money you should pay for it. So you could know the computer’s price and call it as variable as "Y" , then count your friends , let's say you are three people and call that number as variable "X" , so if you want to know how much you should to pay . So you must divide the computer’s price by three and you can write it like “Y/X = How much you should pay”. So my brother understands a part of Algebra, and it's very, very small part.