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A numerical expression uses numbers and operations. It also has an equal sign. An algebraic expression uses variables and operations. Unlike a numerical expression it does not have an equal sign.
An algebraic expression that is not equal (Such as 3=0) is called an inequality, and can be expressed as 3≠0.
no. an equation such as 5n = 6 has an equal sign however an expression such as 5n does not have an equal sign. it is called an expression because it is another way to EXPRESS 6
a variable expression
There are a few numbers that do not need signs. You do not have to sign when timing something.