An example of a true statement in algebra is x=x
I assume you mean, in an equation. Such a number is called a "solution" or a "root" of the equation.
No number, by itself, makes it true.
A solution or root makes a true statement when substituted in an equation.
No, that's not true.
This statement is true.
the #
It is called an identity.
No; this statement is not true. The number 6 is an example of why this is not true.
True.
True - but the statement is also true for all prime numbers, so is not a particularly useful statement.
An equation or an inequality that contains at least one variable is called an open sentence. ... When you substitute a number for the variable in an open sentence, the resulting statement is either true or false. If the statement is true, the number is a solution to the equation or inequality.
The statement is true.