is one symbol already an expression in math
It already is decimal expression of one-third.
a variable expression in math is a symbol that is in a sentence
If you are talking about math then its usually " x " but if that is already use in the expression and you want to use another symbol to represent a DIFFERENT number then you can use y or a or so on.
It means that the number or expression on the left of the symbol is less that the value or expression to the right, or that they are equal.
No.
An algebraic expression will normally include one or more variables that is represented by a letter or some non-numeric symbol.
it is called a variable
algebraic expression
6
A power or exponent.
3x+2 x is a variable. A variable is a symbol (x, y, etc...) that does not have an assigned value.
Those are the "terms" of the expression.