What is an expression and a statement ?

Question :

What is an expression and a statement ?

What is an expression and a statemenAn expression is any legal combination of symbols that represents a value. For example, 2.9, a + 5, (3 + 5) / 4.

A statement is a programming instruction that does something i.e. some action takes place. For example:

print("Hello")

a = 15

b = a - 10t ?