Question

what is the difference between an expression and an equation?

Answer 1

An expression or algebraic expression is a mathematical expression involving constants, variables and algebraic operations.
For example : 3x³ - 2y + 5(m/n)

An equation is a mathematical statement saying values of two expression are equal.
For example:  3x³ -2x = 5y + x²

Answer 2

experssion is a set of algbraic terms seperated by '+' or' -' sign.

Equation is when there are two expresions seperated by '=' sign