It has at least one expression with an equal symbol.
What is an expression?
What is Algebra?
it is a branch of mathematics dealing with symbols and the rules for manipulating those symbols
9(4x - 6y + 1)
4x+2=100
What is an equation?
36x - 18y + 9
Combined
40 + 45m
An example of an equation
5(8 + 9m)
Addition
It normally consists of at least one variable and coefficient with a constant
