Friends, we use numbers or numerals like 1234... in arithmetic and similarly we use alphabets along with numbers in algebra terms. I have solved some simple algebra problems earlier just look into those problems. Below you can see an example where i have used algebra terms.
Example No1:-
Solve the following
x+y= 18
2x-y=9
Solution-----> x=9 and y= 9
The problem has the algebraic term x and y did you notice that? Just concentrate on the method your teachers teach you even the hardest math problem will be an easy one.